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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.

Initiatives: Grand Challenges Global Call-to-Action
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Nature-Inspired Identification of Novel Antivirals with Distinctive Mechanisms of Actions: Case of HIV and SARS-CoV-2

Fidele Ntie-Kang, University of Buea (Buea, Cameroon)
Oct 26, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Fidele Ntie-Kang, a computational chemist at the Department of Chemistry, University of Buea in Cameroon, will establish a state-of-the-art drug discovery regional center for Central Africa that utilizes natural products from across the continent to identify new antiviral drugs suitable for resource-limited regions. Dr. Ntie-Kang is a pioneer in harnessing the diverse African flora for drug discovery purposes. His research group is building an online natural products database, which contains compounds isolated from plants, fungi, corals and bacterial species growing in Africa. He will set up a unique team of synthetic organic chemists, natural product chemists, computational chemists, microbiologists, biochemists and artificial intelligence experts, and build an open access pan-African library of naturally occurring compounds and a cloud-based computing platform. The team will combine virtual and in vitro screening techniques to identify natural compounds targeting the SARS-CoV-2 spike protein and the HIV Vpu protein, as well as promoting HIV latency-reversal. They will also train students to expand research capacity, and transfer the knowledge and technology developed during the project to other research institutes.

Enhancing Prediction of Adverse Pregnancy Outcomes in Africa Through Partnerships and Innovation

Annettee Nakimuli, Makerere University (Kampala, Uganda)
Oct 20, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Annettee Nakimuli, Associate Professor of Obstetrics and Gynaecology and Dean of the School of Medicine at Makerere University in Uganda, will identify predictors of adverse pregnancy outcomes in Ugandan women with a focus on Great Obstetrical Syndromes (GOS), such as pre-eclampsia, to help develop context-relevant interventions for prevention and treatment. Dr. Nakimuli is an internationally-recognized research leader in maternal health for Africa. She performed the first genetic case-control study on pre-eclampsia among indigenous Africans, and identified different biological factors to those found in European studies, which helps explain the higher incidence. Building on her experience setting up cohort studies, she will prospectively collect biological samples and clinical data from a large cohort of 4,000 women throughout their pregnancies at Kawempe and Mulago Hospitals in Kampala to identify predictive biomarkers, and establish a biobank and database to facilitate future research. She will also implement artificial intelligence for data analysis to identify relevant socio-epidemiological, clinical, and biological features that contribute to the development of Great Obstetrical Syndromes.

Investigating the Immune Kinetics of COVID-19 Vaccine Responses Between European and African Populations

Yaw Bediako, Yemaachi Biotechnology Ltd. (Accra, Ghana)
Oct 20, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Yaw Bediako, Founder and Chief Executive Officer of Yemaachi Biotech and researcher at the West African Centre for Cell Biology and Infectious Pathogens in Ghana, will bring together African biotech and academia with the Francis Crick Institute to provide important insights into how vaccines can be designed to work more optimally among African people. The African continent has the highest infectious disease burden in the world but almost no capacity for vaccine development or testing. Instead, most vaccines are tested in healthy Caucasian adults in high income countries, and many have lower efficacy among African populations. Dr. Bediako studies immune function in African populations and is devoted to building research capacity in Africa. He developed and successfully deployed the first national SARS-CoV-2 variant tracker on the continent, which displayed the distribution of viral variants in real-time. He will perform a prospective cohort study, and use molecular, cellular, and data-analysis approaches to investigate if the cellular and humoral immune responses to the AstraZeneca COVID-19 vaccine differ between Ghanaian and UK populations, and identify the effect of host genetic diversity on vaccine response. These data will support more rational vaccine design among African populations.

Genomics for Infectious Diseases Control and Epidemics Preparedness

Abdoulaye Djimde, Pathogens Genomic Diversity Network Africa (PDNA) (Bamako, Mali)
Oct 19, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Abdoulaye Djimde, President of the Pathogens genomic Diversity Network Africa (PDNA), will work to better prepare Africa to fight infectious diseases and tackle those of the future. Dr. Djimde’s research group uses molecular and genetic approaches to study malaria, and their results have supported policy decision-making in Mali and the West Africa sub-region. His work on anti-malarial resistance led to a change in first-line therapy, and his group also serves as a training ground for many scientists in Africa. Recognizing the importance of collaborative research across the continent for studying infectious diseases, he established PDNA, which is an African-led research network spanning sixteen countries. PDNA investigates the genetic diversity of human pathogens to inform disease control and elimination strategies. He will set up a PDNA Pathogens Genomics Institute in Mali equipped with genetic and molecular epidemiology infrastructure. The Institute will train the next generation of scientists, and study the emergence and spread of malaria, SARS-CoV-2, and anti-microbial resistance, and identify novel pathogens. They will also focus on engagement with communities and health policy makers across the member countries to support public health on the continent.

Integrating Malaria Molecular Epidemiology into Routine Surveillance in Kenya

Isabella Oyier, KEMRI-Wellcome Trust Research Programme (Kilifi, Kenya)
Oct 19, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Isabella Oyier, Associate Professor and Head of Bioscience at the KEMRI-Wellcome Trust Research Programme in Kenya, will establish a national malaria molecular surveillance platform that is integrated into the Division of National Malaria Programme (DNMP) to directly translate research into policy. The malaria burden in Africa is no longer declining due to the emergence of new variants that are undetectable by standard diagnostics and resistant to the frontline antimalarial drug. Dr. Oyier, a leader in malaria molecular epidemiology, is committed to eradicating malaria in Africa. She pursues a collaborative approach by sharing resources across laboratories and partnering with key stakeholders to ensure research impacts policy. This approach enabled her to make critical contributions to the genomics surveillance and testing efforts during the COVID-19 pandemic in Kenya. She will establish a national data repository and a working group to develop a sustainable next-generation sequencing platform that can be easily implemented across malaria-endemic regions where sentinel health facilities will be established to collect samples. She will also build user-friendly bioinformatics pipelines to examine parasite genetic diversity and the distribution of resistance markers, and to present actionable data for policy decision-making.

Rapid Interventions to Save Newborn LivEs (R.I.S.E)

Mainga Hamaluba, KEMRI-Wellcome Trust Research Programme (Kilifi, Kenya)
Oct 19, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Mainga Hamaluba, Head of Clinical Research at the KEMRI-Wellcome Trust Research Programme in Kenya, will develop a pragmatic adaptive trial platform to evaluate key interventions for improving child survival in East Africa in real-life routine practice conditions as a faster and lower-cost alternative to traditional randomized controlled trials. Dr. Hamaluba has led a wide-range of complex clinical trials, including oversight of a complement of COVID-19 prevention and vaccine trials. She will use newborn care and hypoxic-ischaemic encephalopathy (HIE; also known as birth asphyxia) as a case study for the platform. HIE is the leading cause of admission in a network of Newborn Units in Kenya and causes severe neurological disabilities in survivors. Leveraging an existing and unique clinical surveillance framework and biobank at her institute, she will conduct a pragmatic platform adaptive randomized controlled trial of three licensed treatments to evaluate their effect on newborn survival. She will also establish procedures to increase the speed, rigor, and adaptability of regulatory approval protocols for clinical trials, and focus on training and mentorship of local healthcare workers in clinical research.

Leveraging Bacterial Genomics for Health Solutions in Africa

Iruka Okeke, University of Ibadan, College of Medicine (Ibadan, Nigeria)
Oct 16, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Iruka Okeke, Professor of Pharmaceutical Microbiology at the College of Medicine, University of Ibadan in Nigeria, will develop sequence-based methods and leverage genomics data to jumpstart the development of diagnostics and vaccines for neglected bacterial pathogens in African settings. Professor Okeke has devoted her career to studying neglected enteric bacteria that can cause potentially fatal bloodstream and diarrheal infections. She recognizes the power of genomics approaches to improve surveillance and better define pathogen virulence. She has been developing lower-cost and simpler methods to traditional culture-based techniques for detecting difficult-to-culture bacterial pathogens directly from blood samples in minimally-equipped laboratories. These methods incorporate nanopore sequencing together with target enrichment by the CRISPR-Cas9 system for rapid, direct-from-specimen diagnosis and genomic surveillance. She will adapt these methods for identifying a range of pathogens directly from stool, urine, and other clinical samples. She will also grow a community of experts to support this project by training African scientists in molecular science and bioinformatics.

Implementation of Pharmacogenomics Testing for Effective Care and Treatment in Africa

Collen Masimirembwa, African Institute of Biomedical Science and Technology (Harare, Zimbabwe)
Oct 15, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Collen Masimirembwa, Professor and founding President and Chief Scientific Officer of the African Institute of Biomedical Science and Technology (AiBST), Zimbabwe, will generate a research and innovation ecosystem, including training scientists and establishing centers of excellence in genomic medicine research, for the sustainable development of genomic and pharmaceutical medicine capability in Africa. Dr. Masimirembwa is on a mission to achieve world-class drug discovery and development capability in Africa. In 2002, he founded AiBST in Zimbabwe, and over the last ten years has organized a series of drug discovery and development courses across the continent to introduce the subjects and contextualize them for Africa. He will establish three centers of excellence in Zimbabwe, Kenya, and Nigeria to help launch an R&D biotechnology industry in Africa by forging partnerships with relevant stakeholders and training industry-focused scientists. He will also perform a prospective, multi-center clinical trial across several countries to determine the effectiveness of pharmacogenetic testing in reducing the incidence of adverse drug reactions and increasing treatment efficacy in African populations.

Vaginal Microbiome Research Consortium for Africa (VMRC4Africa)

Jo-Ann Passmore, University of Cape Town (Cape Town, South Africa)
Oct 15, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Jo-Ann Passmore, Associate Professor of the University of Cape Town in South Africa, will pilot the formation of the vaginal microbiome research consortium in Africa (VMRC4Africa) by establishing a network of researchers and centers of excellence for conducting research and clinical trials to promote women’s health across the continent. Dr. Passmore uses immune biomarkers and microbial-based approaches to study HIV and HPV pathogenesis and prevention in African women. Her work identified genital tract inflammation as a major predictor of HIV risk and pathogenesis, and revealed that inflammation reduces the efficacy of the anti-retroviral drug tenofovir, which is used to treat HIV. Her laboratory is a South African center of excellence in HIV prevention and she is committed to nurture and mentor young African researchers. She will establish the necessary infrastructure for African researchers to document the changing composition of the vaginal microbiota, beginning with South African and Kenyan women. They will use sequencing and build a biorepository to help identify health-promoting <em>Lactobacillus</em>-dominated microbiota in different geographic regions. These could be co-formulated into live biotherapeutic products to treat genital tract inflammation for women globally.

The African Data and Biospecimen Exchange - Facilitating Equitable Data and Biospecimen Sharing, and Resolving Barriers to Data and Biospecimen Sharing in Africa

Nicki Tiffin, University of the Western Cape (Belville, South Africa)
Oct 11, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Nicki Tiffin, Professor at the University of the Western Cape, South Africa, will build an online platform – the African Data and Biospecimen Exchange – to facilitate equitable, ethical, and transparent data and biospecimen sharing on the continent, and promote research collaborations to improve health. Sharing biospecimens and data such as human genomics and pathogen sequencing data for use by other scientists is critical to sustain research in Africa. However current barriers that preclude sharing include high costs, the need for specialized formatting, and legal limitations for sensitive data. Dr. Tiffin has worked extensively across multiple health research domains, built research networks and collaborators across Africa, and is passionate about the effective use of health data in scientific research. She will build a platform for uploading standardized resource meta-data to reduce overhead costs, and provide practical guidance and online templates for sharing sensitive datasets. She will undertake a consultative process with domain experts to produce the design and functionality of the platform.

Evaluation of the Vaginal Microbiome and Metabolomic Profiles in Adverse Pregnancy Outcomes in a Kenyan Population

Moses Obimbo Madadi, University of Nairobi (Nairobi, Kenya)
Oct 6, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Moses Obimbo Madadi, Clinician-Scientist and Associate Professor at the University of Nairobi, Kenya, will form a coalition of researchers and develop tools to study the vaginal microbiome and metabolites during pregnancy to help identify predictive biomarkers and intervention strategies for improving pregnancy outcomes in Kenya. Africa carries a high burden of severe pregnancy complications such as stillbirths and neonatal deaths. To address this, Dr. Madadi is leveraging his broad experience in clinical, basic, and epidemiological research to establish a unique niche of translational research to support the health of women in Kenya and around the world. He will perform a prospective cohort study at four hospitals in Nairobi by collecting clinical data and vaginal samples from over 1200 pregnant women. He will use next-generation sequencing to analyze microbial communities, and metabolomic profiling to identify predictive and diagnostic signatures of adverse pregnancy outcomes. These data will be used to develop artificial intelligence-assisted prediction models that could be used as valuable screening tools to identify at-risk pregnancies for early interventions.

Rapid Clinical Sampling, Pooling and Targeted Deep Sequencing of Malaria Parasites: A Novel Model for Effective Malaria Molecular Surveillance

Anita Ghansah, Noguchi Memorial Institute for Medical Research (Accra, Ghana)
Oct 6, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Anita Ghansah, Senior Research Fellow at the Noguchi Memorial Institute for Medical Research at the University of Ghana, will build a cost-efficient malaria molecular surveillance system with high spatial and temporal resolution that covers the entire country. Dr. Ghansah is an internationally-trained genetic epidemiologist. Recognizing the power of genomics and bioinformatics approaches for bolstering malaria surveillance in Ghana, she has been a pioneer of bioinformatics training in the country. She introduced expertise for genotyping molecular markers of drug resistance, which led to a change in the national policy on first-line treatment of malaria. She will build the relevant personnel and infrastructure capacity for this project, and lead a research team and staff effort to rapidly monitor key molecular markers of drug and diagnostic resistance in blood samples from malaria patients using high-throughput sequencing and bioinformatics approaches. This will produce country-wide, near real-time surveillance data to better inform the control and elimination efforts of the National Malaria Control Program of Ghana.

Strategic Domestic Resource Mobilization (DRM) Models for Financing Sustainable Priority Research and Development (R&D) in Rwanda and Kenya

Vincent Okungu, University of Nairobi (Nairobi, Kenya)
Oct 6, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Vincent Okungu, Researcher at the University of Nairobi in Kenya, will develop sustainable financing models to boost domestic funding for research and development (R&D) in East Africa. R&D is routinely underfunded in Africa, with the continent producing around 2% of the research output yet accounting for 15% of the global population. Dr. Okungu is a senior health economist whose passion is to see the development of resilient health systems in Africa. He has directed several health sector projects, including a national strategy for non-communicable diseases, together with the Ministry of Health, to guide resource mobilization and investments in Rwanda. He will investigate R&D financing by governments in two study countries, Kenya and Rwanda, and design creative approaches to motivate policymakers to increase budgets, as well as identifying high impact health programs such as vaccine development that could attract investments from public and private sources. He will also leverage knowledge from other sectors to learn how best to mobilize domestic finances for R&D and explore new sources of tax revenues. He aims to establish a mechanism for financing at least one priority R&D project agreed upon by public and private stakeholders in Kenya and Rwanda.

Strenthening Nigeria's Surveillance System for Malaria Elimination by Integrating Molecular and Genomic Data

Ify Aniebo, Health Strategy & Delivery Foundation (Abuja, Nigeria)
Oct 6, 2021
Grand Challenges Global Call-to-Action> Calestous Juma Fellowship

Ify Aniebo, Senior Research Scientist and Principal Investigator at the Health Strategy and Delivery Foundation in Nigeria, will integrate molecular and genomics data for tracking drug resistance and disease transmission to strengthen malaria elimination efforts in Nigeria, which has one of the highest global burdens. Dr. Aniebo is a molecular geneticist working on malaria drug resistance, and is acknowledged as one of her country’s top young health leaders. She is also devoted to empowering the next generation of African females into the sciences. To achieve her goal of eradicating malaria, she has created partnerships with scientists and policy makers within and outside Nigeria. Leveraging these partnerships, including Nigeria’s National Malaria Elimination Program, she will conduct a cross-sectional survey in households across the country and collect around 10,000 blood samples from children aged 6-59 months during the wet season when there is high malaria transmission. These samples will be subjected to next generation sequencing to investigate the prevalence and genetic diversity of the malaria pathogen across different regions, and the presence of drug resistance. She will also build a reporting tool and dashboard to present the data and directly support decision making.

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The Bill & Melinda Gates Foundation is part of the Grand Challenges partnership network. Visit grandchallenges.org to view the map of awarded grants across this network and grant opportunities from partners.