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Grand Challenges is a family of initiatives fostering innovation to solve key global health and development problems. Each initiative is an experiment in the use of challenges to focus innovation on making an impact. Individual challenges address some of the same problems, but from differing perspectives.

2579Awards

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Climate-Smart Dairying Platform for Women Dairy Farmers of Rural India with Long-Term Social, Economic, and Environmental Impact

Ani Varghese, ZeroEarth Private Limited (Thrissur, Kerala, India)
Mar 26, 2025

Ani Varghese of ZeroEarth Private Limited in India will pilot test a climate-smart dairy farming platform supporting rural women farmers in the Indian state of Tamil Nadu. Through partnerships with financial institutions, they will set up mechanisms facilitating farmers' access to credit to sustainably increase their farming income. They will launch a pilot business center, which will provide training in entrepreneurship and climate-smart farming practices; centralized access to veterinary services; and coordination between dairy, calf-rearing, and fodder farmers. Farming practices supported by the center will include those to improve the health of soil for growing fodder; to optimize feed to minimize greenhouse gas emissions and enhance milk quality; and to efficiently manage manure, with the launch of a biogas plant to generate electricity.

Establishing AI-Enabled Data-Driven Linkage Between Climate Change and Its Impact on Health Adversities in the Fragile Geography of the Sunderbans, West Bengal

Satadal Saha, Foundation for Innovations in Health (Kolkota, West Bengal, India)
Mar 21, 2025

Satadal Saha of the Foundation for Innovations in Health in India will develop an AI-based platform to support public health interventions for women living in the Sundarban Biosphere Reserve, focusing on anemia, urogenital tract infections, and anxiety and depression. The Reserve is a river delta region highly susceptible to climate change-driven severe weather. The project will build on the team's existing digital platform for health data that supports community health workers deliver primary care to island communities. They will collect environmental data, including data for weather and air and water quality, and expand the platform with software enabling regular monitoring and integrated analysis of health and environmental data. This includes incorporating an AI-based predictive model to guide the proactive design and implementation of public health interventions for vulnerable women in this region.

Heatwave Resilience: Integrating Advanced Forecasting and Community Action in Karnataka

Raghuram Dharmaraju, I-Hub for Robotics and Autonomous Systems Innovation Foundation (Bengaluru, Karnataka, India)
Mar 19, 2025

Raghuram Dharmaraju of the I-Hub for Robotics and Autonomous Systems Innovation Foundation in India will improve heatwave forecasting using AI approaches and develop an early warning system for the Indian state of Karnataka to enhance preparedness for heat-induced health risks. The improvements in forecasting will encompass increases in accuracy, lead time, and spatial resolution. The early warning system will use web-based dashboards, mobile apps, and social media platforms to communicate heatwave alerts in local languages. It will include messages tailored to particularly vulnerable groups as well as alerts to healthcare providers to actively monitor these groups. It will also send notifications to relevant government agencies about the potential severity of health impacts. This system will guide public health interventions while helping establish data collection mechanisms for ongoing improvement of the system.

Climate-Informed AI-Based Decision Support Tool for Strengthening Integrated Vector-Borne Disease Response in Uttar Pradesh

Tavpritesh Sethi, Indraprastha Institute of Information Technology Delhi (New Delhi, Delhi, India)
Mar 18, 2025

Tavpritesh Sethi of Indraprastha Institute of Information Technology Delhi in India will develop an AI-based platform to support responses to vector-borne diseases in the face of climate change in the Indian state of Uttar Pradesh. They will establish a comprehensive database that integrates climate data with data from existing programs for the control of vector-borne diseases (malaria, dengue, chikungunya, Zika, and Japanese encephalitis). Data will be at the block level of local government in Uttar Pradesh and will include real-time data. For analysis, they will develop an AI-based platform, named Sanketak, that includes modules to capture data, provide automated alerts, visualize changes in disease incidence, and identify early warning signs that predict disease hotspots. They will pilot test the platform, evaluating its potential to preempt, detect, and manage vector-borne disease outbreaks in a timely and effective manner.

Federated AI for Open-Source Antimicrobial Resistance (AMR) Surveillance in India

Tavpritesh Sethi, Indraprastha Institute of Information Technology Delhi (New Delhi, Delhi, India)
Mar 12, 2025

Tavpritesh Sethi of Indraprastha Institute of Information Technology Delhi in India will develop an AI-based platform for AMR surveillance and management across a broad network of public and private hospitals in India. The platform will extract weekly data on AMR from the All India Institute of Medical Sciences, New Delhi (AIIMS Delhi) hospital and the Max Healthcare hospital network, including patterns of antibiotic prescriptions across the network. It will use a federated data analysis approach (joint analysis without sharing the data itself), and they will develop and integrate AI-based models to identify and predict trends in AMR. They will also create applications driven by these models to widely and effectively communicate the analyses to healthcare professionals. This will support antibiotic stewardship and data-driven AMR management at both the local and regional levels.

AI-Assisted Support for Healthcare Workers Serving Adolescent Girls

Sai Raj Reddy, Daia Tech Private Limited (Mumbai, Maharashtra, India)
Mar 10, 2025

Sai Raj Reddy of Daia Tech Private Limited in India will develop a program to increase access to health education and related resources for adolescent girls in rural areas of the Indian state of Karnataka. The program will be developed in partnership with the Karnataka Health Promotion Trust, building on their ongoing work with local schools, healthcare providers, community leaders, and government agencies. After engaging community members to understand the local context, they will develop resources for adolescent girls including life skills courses and health education workshops and pilot test the program in selected villages. They will integrate AI tools across the program to broaden participation and to broaden the range of health outcomes improved for adolescent girls.

ClimaTickNet: Mapping the Spatial and Temporal Networks of Climatic Factors Influencing Ixodid Tick Abundance and Tick-Borne Pathogens in the Western Ghats, India

Chiranjay Mukhopadhyay, Manipal Institute of Virology (Udupi, Karnataka, India)
Mar 4, 2025

Chiranjay Mukhopadhyay of the Manipal Institute of Virology in India will perform a two-year longitudinal study in the Western Ghats region of India, focusing on sentinel surveillance of tick-borne pathogens and their transmission dynamics. This mountain range region is known for its high biological diversity, and they will sample across 12 sites representing diverse ecological habitats where people and wild and domestic animals interact most frequently. They will collect host-seeking ixodid ticks, screen them for eight tick-borne pathogen groups, and perform whole-genome sequencing for the pathogens identified. Corresponding weather data will be collected from the Indian Meteorological Department. They will combine this longitudinal data to develop statistical models that predict the spatial and temporal transmission of tick-borne pathogens and the corresponding disease risk, which will guide public health interventions.

Modeling Health Impact and Cost-Effectiveness of Malaria Chemoprevention and Vaccines in Africa

Bruno Mmbando, Kampala International University in Tanzania (Dar es Salaam, Tanzania)
Mar 1, 2025

Bruno Mmbando of Kampala International University in Tanzania will model the combined impact of malaria chemoprevention strategies and vaccines on the burden of childhood malaria in Africa. A modeling focus will be on determining the level of vaccine uptake at which chemoprevention strategies cease to be cost-effective in settings with moderate to high malaria transmission. Data modeling will include the short- and long-term effects of parasite antimalarial drug resistance on the combined impact of chemoprevention and vaccines. The multidisciplinary team will include data modelers, health economists, clinical trialists, and epidemiologists. They will work closely with malaria decision-making organizations, leading to tools and processes that better support the use of malaria data modeling to inform public health interventions.

This grant is funded by The Wellcome Trust.

Mapping of Heat Stress Zones in Indian Cities: A Satellite-Based Approach to Guide Rooftop Cooling Interventions

Karthik Sasihithlu, Indian Institute of Technology Bombay (Mumbai, Maharashtra, India)
Feb 27, 2025

Karthik Sasihithlu of the Indian Institute of Technology Bombay in India will map urban heat islands across India and test radiative cooling paint on building rooftops to reduce temperatures, heat-related illnesses, and energy consumption for cooling. Urban centers in India face extreme summer temperatures, worsened by the heat island effect in developed areas relative to rural areas and by heatwaves increasing in frequency because of climate change. Radiant cooling paint, because it does not require structurally modifying buildings, could be an affordable and sustainable intervention to reduce the negative health and economic impacts of heat. Heat islands will be mapped using satellite imagery, and radiative cooling paint will be tested in the severe heat islands identified.

Climate-Smart Ruminant Feed Additives: Consortia of Algae and Microbes for Sustainable Enteric Methane Abatement, Improved Health, and Enhanced Productivity in Indian Cattle

Arup Ghosh, CSIR-Central Salt and Marine Chemicals Research Institute (Bhavnagar, Gujarat, India)
Feb 21, 2025

Arup Ghosh of CSIR-Central Salt and Marine Chemicals Research Institute in India will design a feed additive for Indian cattle that combines algae and bacteria to reduce enteric methane emission, improve livestock health, and enhance agricultural productivity. From Indian sources, they will select seaweed, marine microalgae, and bacteria, screening them for their ability to inhibit methanogenesis in vitro and in the rumen of cattle. They will also assess their effect on the rumen microbiota and on cattle physiology and productivity. Candidate products made from these additives will be evaluated for their economic viability, including their potential for large-scale cost-effective production, storage, and distribution, as well as for their benefits to farmers relative to existing solutions.

Development of a Large Language Model (LLM)-Based Clinical Decision Support System for Increasing Awareness and Accessibility for Diabetic Footcare

Belehalli Pavan, Strideaide Private Limited (Bangalore, Karnataka, India)
Feb 18, 2025

Belehalli Pavan of Strideaide Private Limited in India will develop an AI-based platform to increase timely access to diagnosis and treatment for diabetic foot ailments. Early detection of peripheral neuropathy, peripheral arterial disease, and diabetic foot ulcers would enable interventions that reduce the need for limb amputation. The platform will build on their existing network of podiatry clinics located in a variety of public spaces. These clinics are staffed with a paramedic providing treatment guided by diagnostic tools including a foot mat with a plantar pressure sensor to help predict and assess foot-bottom ulceration. Existing and new digital data from these clinics will be used to build a diabetic foot registry, to improve automated assessment through AI-based analysis, and to train an LLM with a chatbot interface for clinical decision support across the podiatry clinics.

Building a Large Language Model (LLM)-Powered Q&A Service for Pregnancy and Infant Care into Kilkari, the World's Largest Maternal Messaging Program

Amrita Mahale, ARMMAN (Mumbai, Maharashtra, India)
Feb 11, 2025

Amrita Mahale of ARMMAN in India will incorporate an LLM-based chatbot into the Kilkari mobile health service to answer questions about pregnancy and infant care. Kilkari currently provides weekly pre-recorded messages on preventive care, and it is implemented in partnership with India's Ministry of Health and Family Welfare. They will assess different available LLMs and train the best candidate with the Kilkari database of vetted content. They will pilot test the model with Kilkari users through WhatsApp, engaging users in Delhi and in the state of Jharkhand to encompass diverse participants spanning urban, rural, and tribal populations. The test will include regular surveys to measure the service's accuracy, relevance, and usability.

EndoAI: Optimizing Endoscopic Workflow with an AI-Powered Report-Generating Tool for Enhanced Efficiency and Productivity

Mohanasankar Sivaprakasam, Indian Institute of Technology (IIT), Madras (Chennai, Tamil Nadu, India)
Feb 11, 2025

Mohanasankar Sivaprakasam of the Healthcare Technology Innovation Centre at the Indian Institute of Technology Madras in India will develop an AI-based platform to support diagnosis and report generation for endoscopic gastrointestinal exams. They will use curated datasets of annotated endoscopic images to develop an AI-based model for diagnosing gastrointestinal abnormalities, such as polyps and ulcers. The data will also be used to train a Large Language Model (LLM) to generate diagnostic reports of endoscopic exams including representative images and text descriptions. This will improve report quality and consistency for better diagnosis and more accurate, detailed patient records, with the report automation reducing the time and personnel required. Together, these platform components will improve patient care in gastroenterology, including more efficient care across more patients.

Using ChatGPT to Improve Sexual and Reproductive Health Outcomes for Young Women and Adolescent Girls

Ntombifikile Mtshali, Shout-It-Now (Cape Town, South Africa)
Jan 25, 2025

Ntombifikile Mtshali of Shout-It-Now with Elona Toska of the University of Cape Town, both in South Africa, will pilot test use of ChatGPT to provide information on sexual and reproductive health that helps young women and adolescent girls in South Africa make informed decisions and effectively access health services. They will test integration of the chatbot into Shout-It-Now's existing platforms: a tablet-based platform in mobile clinics staffed by young women and a mobile phone app. They will train ChatGPT to provide information on sensitive topics, including gender-based violence, HIV infection risk, and pregnancy, using existing materials and guided by a workshop with mobile clinic staff. Users' perception of the chatbot and the chatbot's effectiveness in increasing the use of health services will be assessed using on-line questionnaires and phone surveys across five demographically different districts.

A Large Language Model (LLM)-Enabled Community-Centered Platform for Sexual and Mental Wellness Among Youth and Women in Rural India

Vijay Sai Pratap, OnionDev Technologies Pvt. Ltd. (Gurgaon, Haryana, India)
Jan 22, 2025

Vijay Sai Trap of OnionDev Technologies Pvt. Ltd. in India will develop an AI-based platform to provide accurate and private automated answers to questions on sexual health and mental well-being for youth and women in rural India. They will generate a dataset of community-generated questions on these topics during a mental health awareness campaign in the Indian states of Uttar Pradesh, Madhya Pradesh, and Tamil Nadu. With the support of subject matter experts, they will add answers to these questions from the relevant literature. They will then create a master dataset of questions and answers, including translations using an existing LLM trained on local Indian languages. This dataset will be used to compare different AI-based models to identify the one best able to effectively answer questions on these sensitive topics.

Saving Lives, One Query at a Time: A Large Language Model (LLM)-Powered Native-Language Companion for Pregnant Women

Himanshu Sinha, Indian Institute of Technology (IIT), Madras (Chennai, Tamil Nadu, India)
Jan 22, 2025

Himanshu Sinha of the Indian Institute of Technology Madras in India will develop an LLM-based chatbot to provide personalized reliable guidance on antenatal care in multiple Indian languages, particularly for mothers without regular access to health care. The chatbot will use an open-source LLM and will be incorporated into a mobile phone application. The project will begin by surveying pregnant women seeking care in a variety of health care settings and across all three trimesters, asking them what features they would want in a pregnancy app. The LLM will be trained with information from textbooks, clinical manuals, government health resources, and guidelines from professional organizations. Initially the chatbot will function in Hindi and Tamil, with additional Indian languages to follow. The app will track pregnancy milestones and deliver relevant evidence-based advice.

Cowbit: Smartwatches for Cattle for Climate Change and Animal Health Diagnosis

Ananda Kumar Mishra, Cowbit Technologies Pvt Ltd (Cuttack, Odisha, India)
Jan 8, 2025

Ananda Kumar Mishra of Cowbit Technologies Pvt Ltd in India will pilot test the Cowbit, a wearable device for real-time monitoring of dairy cow health. They will test the device across farms in different states in India, along with a mobile app in local languages for user-friendly readout of the data. The device's sensors will measure elements of cow health particularly relevant for guiding farm management. This includes measurements such as udder temperature for early diagnosis of mastitis and prompt veterinary treatment. It also includes behavioral measurements to identify cows without typical signs of estrus (silent heat) who are ready for insemination to maximize breeding efficiency. They will collaborate with farmers and other stakeholders to ensure the device is relevant for increasing farm productivity and has potential for broad uptake.

Functional Biodegradable Mulch Sheets

Kavitha Sairam, FIB-SOL Life Technologies Private Limited (Chennai, Tamil Nadu, India)
Jan 6, 2025

Kavitha Sairam of FIB-SOL Life Technologies Private Limited in India will develop mulch sheets that are biodegradable and can be tilled into the soil or composted. Mulch sheets can improve crop yields while reducing the need for irrigation and addition of agricultural chemicals. Traditional polyethylene mulch sheets, however, need to be removed each crop cycle, which is labor intensive, and they are a source of plastic pollution. To develop a biodegradable mulch product, they will explore various materials and fabrication technologies. They will characterize the physical and chemical properties of the candidate product and pilot test its performance and rate of degradation in the field with two different crops as compared to a commercial polyethylene sheet.

Reducing Nitrous Oxide Emissions in Polyhouse Cultivation of Vegetables in Arid Regions

Anandkumar Naorem, ICAR-Central Arid Zone Research Institute Jodhpu (Jodhpur, Rajasthan, India)
Dec 23, 2024

Anandkumar Naorem of the ICAR-Central Arid Zone Research Institute, Jodhpur in India will perform polyhouse farming experiments in the Indian state of Rajasthan to identify soil conditions that reduce emission of the greenhouse gas nitrous oxide. Polyhouses are greenhouse-style but enclosed in polyethylene rather than glass. They will grow tomato plants as a vegetable test crop, adjusting soil properties by varying factors including the type of mulch, irrigation frequency, the type of nitrogen compound added, and whether biochar is added. They will assess soil health through analysis of its physical, chemical, and biological properties, focusing on how they relate to nitrous oxide emission. The results will guide improvements in polyhouse farming particularly relevant as a sustainable agricultural strategy for arid regions.

Evaluating the Impact of Weather Variation on Physiology of Indian Aedes aegypti and Development of a Climate-Based Prediction Model to Identify Vector and Arboviral Disease Hotspots

Sujatha Sunil, International Centre for Genetic Engineering and Biotechnology (New Delhi, Delhi, India)
Dec 11, 2024

Sujatha Sunil of the International Center of Genetic Engineering and Biotechnology in India will determine the temperature preference of Indian Aedes aegypti mosquitoes to build a mathematical model that predicts their prevalence across the country as well as hotspots for the arboviral diseases they transmit. To understand temperature preference, they will study laboratory-adapted Aedes aegypti, assessing their physiology and development in the laboratory across the mosquito life-cycle at a range of relevant temperatures. They will also sample mosquitoes across sites in Delhi, recording their physical and physiological features and their carriage of arboviruses, together with weather data from nearby weather stations and arboviral disease incidence data from nearby hospitals. The laboratory and field data will be integrated to build predictive models to identify areas in India most at risk of arboviral epidemics.

Profiling Antimicrobial Antibody Repertoires in the Female Genital Tract

Sean Stowell, Brigham and Women's Hospital (Boston, Massachusetts, United States)
Dec 4, 2024

Sean Stowell of Brigham and Women's Hospital in the U.S. will analyze the human antibody repertoires targeting microbes in the female genital track (FGT) to guide the design and use of live biotherapeutic products for bacterial vaginosis. They will use their microarray platform, consisting of an array of antigens from FGT microbes, to analyze genital tract samples from a cohort of women in an HIV drug clinical study in South Africa. They will define the association between FGT antibody levels and specificity with FGT microbial colonization and inflammation. They will also perform experiments to explore potential mechanisms for antibody-mediated microbial attachment and colonization, focusing on antibody interactions with FGT mucin proteins. Together, the results will set the stage for using the microarray platform to identify patient-specific variables as biomarkers to predict the success of live biotherapeutic products.

A Field Method to Measure Symbiotic Nitrogen Fixation

Saliou Fall, Institut Senegalais de Recherches Agricoles (Dakar, Senegal)
Dec 3, 2024

Saliou Fall of the Institut Senegalais de Recherches Agricoles in Senegal will develop techniques to estimate biological nitrogen fixation (BNF) by legume crops to guide their use as alternatives to nitrogen fertilizers for more sustainable agriculture. They will assess BNF by estimating three underlying components. Crop biomass and the proportion that is nitrogen will be estimated by AI-based models, and the nitrogen fraction that comes from BNF will be estimated by measuring the levels of a stable isotope of nitrogen in the soil and in the plants. As test crops for data to train the AI models, they will grow groundnut and cowpea as staple legumes, with an adjacent non-nitrogen-fixing crop, and crotalaria as a cover crop. They will acquire images of the crops from drones or mobile phone applications, and perform laboratory analyses, including measuring biomass, analysis by near-infrared spectroscopy and wet chemistry, and measuring the natural isotope of nitrogen.

Community-Centric Climate Early Warning and Response System (C3-EWS) for Enhancing Resilience to Climate-Related Health Hazards in Siaya County, Kenya

Daniel Kwaro, CREATES (Nairobi, Kenya)
Dec 2, 2024

Daniel Kwaro of CREATES in Kenya will develop an early warning system for malaria outbreaks, floods, and heatwaves in Siaya County in Kenya, co-designing it with the local community. They will incorporate health and demographic surveillance system data, including a specific focus on maternal health indicators and birth outcomes, as well as data from automated weather stations, wearable devices, and mosquito traps. Through secondary data analyses, they will assess the probability and consequences of climate-related hazards, including identifying vulnerable communities, high-risk geographical areas, and occurrence patterns of climate-sensitive diseases. They will actively involve Siaya County residents, healthcare providers, and relevant local authorities in co-designing the early warning system paired with multiple mechanisms for communication to ensure the system is accessible and effective in responding to local needs.

Enhancing Women's Employment Outcomes: Mitigating Travel Costs and Information Barriers in Employer-Provided Creches

Smit Gade, Good Business Lab Foundation (New Delhi, Delhi, India)
Nov 29, 2024

Smit Gade of the Good Business Lab Foundation in India will perform a study in India to better understand the constraints for working mothers in accessing employer-provided childcare and the effects of increasing uptake of this childcare on working mothers and their children. They will perform a randomized controlled trial, recruiting sewing machine operators at a garment factory and unemployed women that will be offered job interviews at the factory. The factory offers free on-site childcare, but uptake is low. The trial arms will test the effect of subsidizing the cost of traveling with children to work, of providing information on the quality of the free creches at the factory, or of both combined. They will determine if the study treatments increase working mothers' uptake of childcare services and encourage unemployed women to interview for work. Trial outcome measures will include assessment of women's quality of life and of their children's welfare.

Development of a Multispecies Bacterial Consortium to Control Fusarium Infection and Deciphering Its Epigenetic Regulation Under Elevated Humidity in Tea Camellia sinensis

Avishek Banik, Presidency University (Kolkota, West Bengal, India)
Nov 28, 2024

Avishek Banik of Presidency University in India will identify a bacterial consortium that can protect tea crops from Fusarium fungal pathogens. The global rise in temperature threatens tea crops in part through increased humidity that favors proliferation of disease-causing Fusarium. To develop a biocontrol strategy for these pathogens, they will isolate Fusarium species from tea plants in tea plantations in the Dooars region of West Bengal as well as bacteria growing on and in the plants. They will use these isolates to characterize the fungal disease process in high-humidity growth conditions in the laboratory and to screen for bacteria that can inhibit it. They will characterize the mechanism of inhibition, including analysis of plant gene regulation, to guide development of an antifungal bacterial product.

Clinical Decision Support Tool Comprising Extractive and Conversational Generative Large Language Models (LLMs) to Assist Palliative Care Health Workers Based on a Knowledge Base of Indian Patient Case Scenarios

Anurag Agrawal, Ashoka University (Sonipat, Haryana, India)
Nov 26, 2024

Anurag Agrawal of Ashoka University in India will develop an LLM-based platform to support medical decision making by home healthcare workers in India who are meeting the growing demand for home-based palliative care. The platform will use an existing proprietary LLM to extract and summarize relevant clinical information, connecting it with an existing open-source AI chatbot to generate advice in a conversational format for healthcare workers. They will test the platform using a dataset they will build of palliative care scenarios, focused initially on care for lung diseases, and they will compare outputs from several different open-source LLMs to guide the platform's final configuration. Expert clinicians will evaluate the clinical advice generated by the platform for its factual accuracy and relevance to the Indian sociocultural context.

Innovative Solutions for Climate-Resilient Dairy Farming: Transforming Livelihoods with DruFarms DairyGuard Technology

Shraddha Jaybhave, DruFarm Technology Private Limited (Nashik, Maharashtra, India)
Nov 25, 2024

Shraddha Jaybhave of DruFarm Technology Private Limited in India will test the DairyGuard wearable device for real-time monitoring of dairy cow health by small-scale farmers. They will test the system in dairy farms in the Indian states of Maharashtra and Gujarat. They will collect and analyze test data on cows, including identifying patterns in movement, feeding, rumination (cud chewing), and body temperature. They will validate the accuracy, reliability, and usefulness of the data and the associated alerts for farmers by comparing the monitoring system results to traditional livestock management methods and veterinary assessment. They will evaluate the impact of the monitoring system on participating farmers' productivity and income and identify opportunities to broaden its uptake and integration with existing agricultural extension services.

Influence of Adverse Climate Events on Birth Outcomes and Maternal and Infant Nutrition Using Data from the 100 Million Brazilian Cohort

Aline Rocha, Fiocruz (Rio de Janeiro, Rio de Janeiro, Brazil)
Nov 21, 2024

Aline Rocha of Fiocruz in Brazil will link datasets through the Center for Data Integration and Knowledge in Health (CIDACS) to measure the impact of extreme climate events on maternal and infant nutritional outcomes across diverse ecological settings and population groups in Brazil. They will integrate longitudinal data from two datasets, the 100 Million Brazilian Cohort and the Climate and Health Data Platform, connecting them through the municipality where mothers reside. The cohort database links data from social protection programs to administrative and health databases to assess the social determinants of health. The data platform extracts and links climate and environmental data from the year 2000 onwards from existing open-source databases. The integration of these two datasets will guide evidence-based programs to enhance the resilience of health services and mitigate the effects of climate change on maternal and child health, particularly for those most vulnerable.

This grant is funded by Grand Challenges Brazil.

 

One Health Approach to Data Modeling of Aedes-Transmitted Arboviruses in Brazil

Livia Casseb, Evandro Chagas Institute (Ananindeua, Pará, Brazil)
Nov 18, 2024

Livia Casseb of Evandro Chagas Institute in Brazil will develop models to understand and predict the impact of climate change on the Aedes mosquito-transmitted arboviral diseases dengue, chikungunya, and Zika in Brazil. The models will integrate a variety of existing data for the different geographic regions of Brazil, including historical data on climate, landscape characteristics, population density, mosquito distribution, and public health. They will also incorporate structured and unstructured data from community networks, teaching and research institutions, and state government entities. The models will reveal interdependent relationships and interactions, including spatial correlations between the arboviral diseases over time. They will develop distinct models for individual geographic regions to serve as early warning systems for arboviral disease outbreaks and to guide local interventions.

This grant is funded by Grand Challenges Brazil.

Community-Led Interventions, Crowdsourced Surveillance, and Governance of Public Spaces in Urban Slum Communities to Mitigate Climate Change

Hernan Argibay, Fiocruz (Rio de Janeiro, Rio de Janeiro, Brazil)
Nov 14, 2024

Hernan Argibay of Fiocruz in Brazil will support a participatory research approach for communities in urban slums in Salvador, Brazil to develop and monitor the impact of interventions to reduce the risk of vector-borne and zoonotic diseases. Guided by local needs, new community-led projects will focus on environmentally transmitted diseases (e.g., leptospirosis and enteric infections) and vector-borne diseases (e.g., leishmaniasis, rickettsiosis, and those caused by the arboviruses dengue, chikungunya, and Zika), all of whom could increase in incidence due to climate change. Intervention projects will include environmental clean-up to reduce disease transmission by mosquitos and rats, planting to improve drainage and provide additional food sources, and using an app to map potential risk factors and guide new projects. They will measure intervention impact, including community-led pathogen surveillance using vector traps, water sampling, and metagenomic sequencing.

This grant is funded by Grand Challenges Brazil.

Heat Islands and Thermal Comfort in the Favelas of Maré, Rio de Janeiro

Andréia Santo, Associação Redes de Desenvolvimento da Maré (Rio de Janeiro, Rio de Janeiro, Brazil)
Nov 14, 2024

Andréia Santo of the Associação Redes de Desenvolvimento da Maré in Brazil will collect temperature, humidity, and air quality data together with associated health data for residents in the Maré favelas in Rio de Janeiro to better understand the causes of respiratory diseases and reduce their burden. They will also train high school girls as citizen scientists to work alongside health professionals in collecting and analyzing data and developing practical technologies to mitigate the health effects of heat and poor air quality. This participatory science approach will serve as a sustainable mechanism to understand the impacts of climate change on the health of particularly vulnerable communities in Brazil and to guide the development of innovative solutions. In selected residences in Maré, they will pilot an intervention consisting of a bio-concrete wall coating to reduce indoor relative humidity as a cause of heat stress for occupants.

This grant is funded by Grand Challenges Brazil.

Measles and Polio Risk Modeling in Africa

Cari van Schalkwyk, Stellenbosch University (Stellenbosch, South Africa)
Nov 10, 2024

Cari van Schalkwyk of Stellenbosch University in South Africa will expand and support the African community of polio and measles disease modelers. The work will be done through the South African Centre for Epidemiological Modelling and Analysis (SACEMA), which is hosted at Stellenbosch University. It will build on an ongoing fellowship program for health policy modeling by recruiting and supporting two new cohorts. Modelers will use available data to develop, validate, and package modeling methods for polio and measles that help African decision-makers assess the risk of outbreaks and the impact of vaccination programs. Additional work will target research goals that include developing enhanced methods to estimate population immunity to polio, comparing existing methods to determine how consistent they are, and extending ongoing modeling work evaluating wastewater-based surveillance of polio and measles as an early-warning signal for outbreaks and to monitor outbreak dynamics.

Climate-Focused Analytics and Modeling for Mosquito-Borne Infections in Southern Africa (CAMMISA)

Sheetal Silal, University of Cape Town (Cape Town, South Africa)
Nov 1, 2024

Sheetal Silal of the University of Cape Town in South Africa will establish a research consortium to analyze how climate change affects the transmission and control of mosquito-borne diseases, focusing on how to optimize interventions for malaria, chikungunya and dengue in Southern Africa. The consortium will integrate research projects led by local data scientists working closely with local decision-makers. Through mathematical and statistical modeling together with climate science, these projects will determine climate scenarios across time scales relevant for management of mosquito-borne diseases. These time scales will encompass short-term windows (6-12 months) as well as longer windows (5-10 years) relevant for policy planning and that incorporate the predicted impact and costs of new interventions. The consortium will also explore even longer windows (over 30 years) to provide predictions useful to initiate policy discussions and bring attention to the long-term implications of climate change on disease control strategies.

This grant is funded by The Wellcome Trust.

Improving Decision-Making for Optimal Malaria Control Impact

Corine Ngufor, Centre de Recherche Entomologique de Cotonou (Cotonou, Benin)
Nov 1, 2024

Corine Ngufor of the Centre de Recherche Entomologique de Cotonou in Benin will evaluate insecticide-based strategies that can complement insecticide-treated bed nets for improved malaria control. In the laboratory, they will test the killing ability of combinations of insecticides, using pyrethroid-susceptible as well as pyrethroid-resistant laboratory-maintained mosquitoes. In experimental hut trials, they will test different strategies, including a combination of a spatial repellent (a transfluthrin passive emanator) with dual active-ingredient bed nets that are two years into their three-year product lifespan. They will also use hut trials with controlled release of insecticide-susceptible and -resistant mosquitoes to determine how different strategies are affected by resistance and by environmental factors such as temperature and humidity. Data modeling will be performed to assess the relative importance of different variables, helping identify the most effective insecticide-based strategies to accomplish malaria control goals.

Leptospirosis in Changing Climates: Soil Health, Sociocultural Behaviors, and Public Health Policy

Roman Thibeaux, Institut Pasteur de Nouvelle Calédonie (Nouméa, New Caledonia)
Nov 1, 2024

Roman Thibeaux of the Institut Pasteur de Nouvelle Calédonie in New Caledonia will examine how climate-driven soil changes and societal and behavioral factors can affect the incidence of leptospirosis to develop community-centered prevention strategies. The causal agent of the disease is the bacterium Leptospira, which can be found in water or soil contaminated with the urine of infected animals and thus can spread following heavy rainfall. Leptospirosis is endemic in the New Caledonia archipelago in the South Pacific, with potential climate-driven increases in incidence. Using soil microcosms in the laboratory, they will explore the effects of temperature, rainfall, and soil structure on Leptospira survival and dispersion. Through interviews and focus groups with New Caledonia community members together with ethnographic fieldwork, they will record local perceptions and knowledge relevant to leptospirosis and its transmission. In partnership with local community members and health authorities, they will then identify sustainable strategies to reduce leptospirosis incidence.

This grant is funded by the Pasteur Network.

Machine-Learning Ultrasound Tools to Monitor Women's Nutrition in Ethiopia

Bryan Ranger, Boston College (Boston, Massachusetts, United States)
Nov 1, 2024

Bryan Ranger of Boston College in the U.S. will develop a cost-effective, portable, and automated ultrasound tool to monitor nutritional health of young pregnant women in Ethiopia. The tool will incorporate AI models that guide users in collecting high quality data, so the tool can be used by frontline and community healthcare workers without extensive ultrasound training, and the models will use this data to predict metrics of nutritional status. In a pilot study conducted at the Jimma Medical center, they will create a database of ultrasound scans, anthropometry, body composition measured by gold standard techniques, and the associated clinical data from a group of young pregnant women. Ultrasound measurements will incorporate data on user position to identify the most informative positions via machine learning. They will survey clinical users to guide the ultimate design of the ultrasound system.

Modeling for Decisions in a Dynamic Africa

Susan Runisha, Ifakara Health Institute (Ifakara, Tanzania)
Nov 1, 2024

Susan Rumisha of Ifakara Health Institute in Tanzania will support the establishment of data modeling hubs in the Democratic Republic of Congo, Nigeria, and Tanzania, linking them into a collaborative network to guide the control of mosquito-borne diseases in the face of climate change. The focus will be on the direct and indirect effects of environmental change on malaria, modeling the interplay of these effects with public health systems and mosquito vector and disease patterns. This will encompass modeling mosquito vector distribution, abundance, and seasonality using historical climate data together with new microclimate information. The models will be designed to support national programs in prioritizing vector surveillance activities, targeting interventions, and developing early warning systems for emerging health threats. The network will strengthen model-building expertise and could be adapted to address mosquito-borne arboviral diseases.

This grant is funded by The Wellcome Trust.

Modelling Aedes-borne Diseases for Improved Public Health Decision-Making in the Horn of Africa

Bernard Bett, International Livestock Research Institute (Nairobi, Kenya)
Nov 1, 2024

Bernard Bett of the International Livestock Research Institute in Kenya will develop disease transmission models for two Aedes mosquito-borne arboviral diseases, dengue and chikungunya, and use the models to design decision support tools to guide surveillance and control of these diseases in Kenya, Somalia and Ethiopia. The models will be validated with longitudinal field data, including mosquito population density, infection patterns, blood meal sources, and the incidence of Aedes-borne diseases in humans. The models will be used to estimate important metrics for disease management, such as time-to-disease outbreak, cost effectiveness of control, and spatial distribution of risk. They will also help identify how the ecological tipping points for outbreaks of dengue and chikungunya compare to each other and how existing control measures for the two diseases could be integrated for better health outcomes. The project will link institutions including the Ethiopia Public Health Institute, Kenya’s Department of Disease Surveillance and Epidemic Response, Somalia’s Federal Ministry of Health, Jomo Kenyatta University of Agriculture and Technology, Abrar University, the Kenya Medical Research Institute, Ohio State University, Global One Health Initiative, and the International Livestock Research Institute.

This grant is funded by The Wellcome Trust.

Uncovering Targets of Protective Immunity for Next-Generation Malaria Vaccines

James Beeson, Burnet Institute (Melbourne, Victoria, Australia)
Oct 30, 2024

James Beeson of Burnet Institute in Australia, Melissa Kapulu of Health Research Operations Kenya Limited in Kenya, Isaac Ssewanyana of Infectious Diseases Research Collaboration in Uganda, Faith Osier of Imperial College London in the U.K. and Pras Jagannathan of Stanford University in the U.S., will analyze clinical samples using an antibody functional assay platform with malaria antigen arrays to identify antigens targeted by protective antibodies for next-generation malaria vaccines. They will identify antigen-specific functional antibodies that strongly correlate with protective immunity to malaria observed in clinical studies with two populations: Kenyan adults after controlled experimental challenge infection with Plasmodium falciparum and children followed longitudinally who were naturally exposed in Uganda and in Papua New Guinea. They will then use biostatistical modeling approaches to identify antigen and functional antibody types that most frequently occur in protective combinations, identifying additive and synergistic combinations of responses and responses most predictive of protective immunity across age groups and populations. This will enable prioritization of antigens and their combinations for malaria vaccine candidates.

Anti-TB Drug Discovery: Design, Synthesis, Evaluation, and Mechanistic Studies

Rajshekhar Karpoormath, The University of KwaZulu-Natal (Durban, South Africa)
Oct 25, 2024

Rajshekhar Karpoormath of the University of KwaZulu-Natal in South Africa will test a set of potential anti-TB hit compounds against clinically relevant TB strains, using the results to generate optimized hit compounds for development of new anti-TB drugs. They will screen the potential hits against susceptible, monodrug-resistant, multidrug-resistant, and extensively drug-resistant TB strains as well as other Mycobacterium strains. The screening results will inform structure-based drug design to generate optimized hit compounds. Potential lead hits will be screened again, with the most promising evaluated against intracellular bacteria in macrophages, tested for in vitro cytotoxicity, and evaluated for mechanism of action in bioassays including carbon-isotope tracing metabolomics and an in vitro granuloma assay.

Remodeling Maternal Health Care: Evaluating the Impact of Midwife-Led Birthing Centers on Maternal and Neonatal Health Outcomes in Ethiopia

Solomon Hailemeskel, Debre Berhan University (Debre Berhan, Ethiopia)
Oct 25, 2024

Solomon Hailemeskel of Debre Berhan University in Ethiopia will pilot test midwife-led birthing centers for pregnant women and newborns at low risk of complications to increase access to safe, high-quality childbirth experiences for Ethiopian women. They will implement a multicenter randomized controlled trial, recruiting a cohort of pregnant women from antenatal care clinics across diverse healthcare facilities to ensure a representative sample. After training midwives to provide continuity of care before, during, and after pregnancy, they will establish midwife-led birthing centers in dedicated spaces, either within or separate from a higher-level health facility. A subset of trial participants will be randomly assigned to the birthing centers. They will compare outcomes for the two groups, including data on maternal and neonatal health outcomes, as well as qualitative data from interviews of mothers, midwives, and healthcare providers.

Revolutionizing Decentralized Diagnosis of Bacterial Sexually Transmitted Infections for Women Worldwide

Violette Defourt, Rapidemic BV (Leiden, Netherlands)
Oct 25, 2024

Rapidemic in the Netherlands will collaborate with Mohammed Majam of Ezintsha in South Africa to develop a prototype for a molecular test for rapid multiplex diagnosis of chlamydia and gonorrhea, while determining the requirements for its deployment in South African primary care settings to serve hard-to-reach populations. The test system will be designed to diagnose symptomatic and asymptomatic patients accurately and inexpensively using a rapid and disposable test. To guide prototyping, they will research user preferences and assess the usability of the developed device. They will also conduct research to ensure that the development meets regulatory requirements for the South African market and addresses the needs of pharmacies and primary healthcare settings in South Africa.

Integrating ChatGPT-4 with a Wearable Vital Signs Monitor to Improve User Proficiency and Clinical Decision Making for Neonatal Care in Kenya

Sona Shah, Neopenda, PBC (Chicago, Illinois, United States)
Oct 24, 2024

Sona Shah of Neopenda, PBC in Kenya will integrate ChatGPT-4 as a virtual assistant for the wearable, vital sign monitor neoGuard, supporting healthcare providers in effectively monitoring and managing neonatal health. They will train ChatGPT-4 to help providers identify and address challenges with the neoGuard monitor, such as poor sensor placement on the patient, and to give providers appropriate recommendations based on vital sign data together with the clinical information they gathered. This real-time clinical decision support would be particularly beneficial in remote and understaffed healthcare facilities. For model training, they will use a dataset of newborns admitted to a hospital in Kenya, including vital signs, clinical histories, and treatment outcomes, as well as insights from unstructured clinical notes extracted using natural language processing. They will evaluate use of neoGuard with ChatGPT-4 for reliability, accuracy, and user-friendliness, and compare neonatal patient outcomes before and after ChatGPT-4 integration with the monitor.

Molecular Epidemiology of HPV Infections in Kenyan Women with Cervical Cytological Abnormalities

Moses Obimbo Madadi, University of Nairobi (Nairobi, Kenya)
Oct 24, 2024

Moses Obimbo Madadi of the University of Nairobi in Kenya and Aida Sivro of the University of Manitoba in Canada will determine the molecular epidemiology of human papillomavirus (HPV) in cervical cancer cases in Kenya to enable monitoring of changes in the prevalence of HPV types targeted by current vaccines and detect possible replacement with other types. They will perform a cross-sectional study on Kenyan women being followed-up for cervical cell abnormalities at hospitals in Nairobi and in rural Kenya. Outcome measures will include prevalence of HPV genotypes by age, geographic location, and HIV status. HPV genotypes will be stratified by cervical diagnosis to determine the top genotypes associated with cervical cancer. This research will provide robust and standardized statistics on the burden and genetics of oncogenic HPV infection in Kenyan women.

Strengthening Childcare Models that Advance Women’s Economic Empowerment in Machakos County in Kenya

Mary Mbithi, University of Nairobi, African Women Studies Centre, Women's Economic Empowerment Hub (Nairobi, Kenya)
Oct 24, 2024

Mary Mbithi of the University of Nairobi in Kenya will test a childcare model in Kenya's Machakos County to increase women's economic participation, reduce and redistribute the burden of unpaid care, and shift gender norms related to childcare. This test will build on results from one tested by the University of Nairobi Women's Economic Empowerment Hub in a different Kenyan county and will inform the model's deployment more broadly across the country. In collaboration with the county government and the local community, they will establish childcare facilities in three sub-counties, including recruiting staff and participating children aged 0-4 years. They will measure impact on child growth, development, and school readiness, as well as measuring impact on women's economic empowerment, including video interviews as qualitative assessment of women's experiences. The county government will take over the running of the childcare centers at the end of the project.

Market and Usability Feasibility for Fetal Lite in Kenya

Wambui Nyabero, Medevice Kenya (Nairobi, Kenya)
Oct 23, 2024

Wambui Nyabero of Medevice Kenya in Kenya and Vibhav Joshi of InnAccel Technologies Pvt Ltd in India will pilot test Fetal Lite, a fetal monitor for early detection of fetal distress to reduce intrapartum mortality. The monitor is designed for ease of use and patient comfort. It measures fetal and maternal heart rate and uterine activity, has automated data analysis with audio and visual alerts, and has a built-in electronic partogram and AI-based pregnancy risk scoring. It is cloud-enabled with a central web dashboard for report sharing and trend monitoring. They will deploy devices in medical facilities associated with the University of Nairobi, measuring the quality of the auto-generated analysis compared to blinded expert annotation and the ease of use by nursing staff. They will also capture the associated birth outcomes, the guidance provided through remote monitoring, and the number of detected fetal distress cases and referrals.

Meeting Them Where They Are At: Using Large Language Models to Lower Barriers to Measuring the Impact of Gender-Based Violence on Mental Health and HIV Outcomes in Girls and Women in Kenya

Mike Baiocchi, Stanford University (Stanford, California, United States)
Oct 23, 2024

Mike Baiocchi of Stanford University in the U.S. will use LLMs to analyze conversational interviews with adolescent girls and young women in Kenya to identify causal mechanisms impairing their health within the potential interplay between living with HIV, mental health conditions, and gender-based violence. Working with the Kenyan Medical Research Institute, they will re-identify and enroll a previously studied cohort living with HIV. The new longitudinal dimension of the study will contribute to untangling causes and effects in parallel to the new LLM-based analysis. They will use LLMs to create statistical measures of participants' descriptions of their experiences to help identify the underlying causes, for instance detecting differences between the responses of those experiencing violence or depression compared to those who have not. Such improved understanding will help to design and target appropriate health interventions.

Acceptability and Marketing of Innovative, Quick-Drying, Reusable, Menstrual SunPad in Kenya

Elizabeth Nyothach, Kenya Medical Research Institute (Nairobi, Kenya)
Oct 17, 2024

Elizabeth Nyothach of Kenya Medical Research Institute in Kenya will explore introduction of SunPad, a prototype reusable menstrual pad, determining its acceptability, marketability, and regulatory requirements in Kenya. The SunPad product is made of fabric with a built-in cleaning and disinfecting process that is activated by sunlight. They will conduct focus group discussions with women in Kenya to understand their needs in terms of washing, drying, and reusing the pad, and to gauge their willingness to pay for the product. They will also research the potential for local manufacturing of the pad and determine the regulatory requirements and associated documentation.

Modeling Climate Impacts on Malaria in Tanzania and Mozambique

Halfan Ngowo, Ifakara Health Institute (Ifakara, Tanzania)
Oct 15, 2024

Halfan Ngowo of Ifakara Health Institute with Sarah Osima of the Tanzania Meteorological Authority, both in Tanzania, and Mercy Opiyo of the Centro de Investigação em Saúde de Manhiça in Mozambique will perform data-driven modeling to better understand the impact of climate change and extreme weather events on mosquito-borne malaria transmission in African countries. They will compare data from countries more prone to such events (Mozambique) to those less prone (Tanzania and South Africa). They will use retrospective and newly generated data to model the increased risk of malaria transmission, encompassing human and mosquito behavior and disease dynamics. The models along with enhanced malaria risk assessment tools will be developed in user-friendly formats for use by local, regional, and continental health authorities. Through the project platform, they will train African data scientists and modelers and expand partnerships contributing to resilient malaria control strategies in the face of changing climate patterns.

Queen Bees: Transforming Agriculture and Livelihoods Through Scientific Beekeeping

Monika Shukla, Buzzworthy Ventures Private Limited (Thane, Maharashtra, India)
Oct 14, 2024

Monika Shukla of Buzzworthy Ventures Private Limited in India will establish a women-led beekeeping network in India to enhance crop yields through bee pollination and improve women's livelihoods. The network will be established initially in one climate zone with a known array of crops. They will educate women about bee pollination for agriculture and provide hands-on training in scientific methods of beekeeping. They will provide multiple types of support for the network, including guidance on integrating weather information to determine optimal times for harvesting honey and deploying bees for pollination, advice on running a beekeeping business, and access to an AI-based app for advice on beehive management. They will also create a community center serving the network with educational programs and as a central site for warehousing honey and processing hive products.

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