University of Virginia - Division of Infectious Diseases & International Health, Qingdao University, - Nutrition and Clinical Services Division (NCSD), Federal University of Ceara, Christian Medical College, Walter Reed Army Institute of Research, Aga Khan University - Biorepository and Omics Research Group, Asociación Benefica PRISMA, University of Venda, University of Virginia - School of Medicine, Aga Khan University, Aga Khan University - Department of Paediatrics, Aga Khan University, International Centre for Diarrheal Disease Research (icddr,b), Federal University of Ceara, Christian Medical College, Walter Reed Army Institute of Research, Aga Khan University - Department of Biological and Biomedical Sciences, University of Toronto - Centre for Global Child Health, University of Virginia - School of Medicine, University of Venda, Haydom Lutheran Hospital, University of Virginia - School of Medicine and University of Virginia - School of Medicine