Departmental Affiliations
Judd L. Walson, MD, MPH, is an infectious disease physician and epidemiologist who works to improve child survival, growth, and development in low- and middle-income settings.
Contact Info
Research Interests
Child and Adolescent Health; Child Mortality; Diarrheal Diseases; Epidemiology; Global Health; Infectious Diseases; Malaria; Maternal Child Health; Neglected Diseases; Tropical Medicine
Experiences & Accomplishments
Dr. Walson is chair of the Department of International Health at the Bloomberg School and the inaugural Robert E. Black Chair in International Health. Walson is a physician trained in Internal Medicine, Pediatrics, and Infectious Diseases with extensive experience working in research, public health programming, policy development, product development, and clinical practice. His research focuses on interventions to improve child survival, growth, and development in Africa and South Asia. He collaborates with ministries of health, NGOs, and academic partners in Bangladesh, Benin, Burkina Faso, India, Kenya, Malawi, Nepal, Pakistan, Thailand, and Uganda. Walson has conducted numerous trials investigating poor nutrition and infectious diseases to inform improvements in policy and programs globally. He has also worked in product development across vaccines, diagnostics, and devices.
He co-leads the Childhood Acute Illness and Nutrition (CHAIN) Network, a collaboration of experts working at institutions across sub-Saharan Africa and South Asia. The studies conducted under the network have led to the development of strategies to reduce mortality among acutely ill children. The research has also led to novel approaches enabling risk-differentiated care, ensuring those at highest risk are supported adequately both during and after contact with the health system. He also leads the DeWorm3 study—a large community cluster randomized trial focused on eliminating soil-transmitted helminths that has enrolled over 360,000 individuals in Benin, Malawi, and India. These intestinal parasites include roundworm and hookworm and are among the most common causes of infections in humans, disproportionately impacting communities living in poverty.
Select Publications
Tickell KD, Denno DM, Saleem A, Kazi Z, Singa BO, Achieng C, Mutinda C, Richardson BA, Ásbjörnsdóttir KH, Hawes SE, Berkley JA, Walson JL. Plasma proteomic signatures of enteric permeability among hospitalized and community children in Kenya and Pakistan. iScience. 2023 Jul 11;26(8):107294. doi: 10.1016/j.isci.2023.107294. PMID: 37554451; PMCID: PMC10405056.
Childhood Acute Illness and Nutrition (CHAIN) Network. Characterising paediatric mortality during and after acute illness in Sub-Saharan Africa and South Asia: a secondary analysis of the CHAIN cohort using a machine learning approach. EClinicalMedicine. 2023 Feb 6;57:101838. doi: 10.1016/j.eclinm.2023.101838. PMID: 36825237; PMCID: PMC9941052.
The Childhood Acute Illness and Nutrition (CHAIN) Network. Childhood mortality during and after acute illness in Africa and south Asia: a prospective cohort study, The Lancet Global Health, Volume 10, Issue 5, 2022, Pages e673-e684, ISSN 2214-109X, doi.org/10.1016/S2214-109X(22)00118-8.
Antibiotics for Children With Diarrhea (ABCD) Study Group, Effect of 3 Days of Oral Azithromycin on Young Children With Acute Diarrhea in Low-Resource Settings: A Randomized Clinical Trial. JAMA Netw Open. 2021 Dec; 4(12):e2136726. doi: 10.1001/jamanetworkopen.2021.36726. PMCID: PMC8678692.
Pavlinac PB, Singa BO, Tickell KD, Brander RL, McGrath CJ, Amondi M, Otieno J, Akinyi E, Rwigi D, Carreon JD, Tornberg-Belanger SN, Nduati R, Babigumira JB, Meshak L, Bogonko G, Kariuki S, Richardson BA, John-Stewart GC, Walson JL. Azithromycin for the prevention of rehospitalisation and death among Kenyan children being discharged from hospital: a double-blind, placebo-controlled, randomised controlled trial. Lancet Glob Health. 2021 Sep; S2214-109X(21)00347-8. doi: 10.1016/S2214-109X(21)00347-8. PMCID: PMC8638697.