Researchers in infectious disease, epidemiology, vaccines, and global health

Karl G. Nicholson

Karl G. Nicholson, also published as Karl Nicholson, is a British physician-scientist, Professor of Infectious Diseases at the University of Leicester, known for influenza antiviral and vaccine trials.

Karl M. Johnson

Karl M. Johnson (died October 2023) was an American physician and virologist who isolated Machupo virus, co-identified Hantaan virus, and led the 1976 commission that named Ebola virus.

Kashmira Date

Kashmira A. Date is an American physician and epidemiologist who spent over a decade at the CDC leading cholera and typhoid vaccine work, winning a 2014 PECASE award.

Kasturi Haldar

Kasturi Haldar is an American malaria and rare-disease researcher at the University of Notre Dame who showed how the malaria parasite develops resistance to artemisinin drugs.

Kate Russell Woodworth

Kate Russell Woodworth is an American medical epidemiologist and pediatrician known for containing antimicrobial-resistant organisms and for building national surveillance of health threats to pregnant women and infants.

Katherine L. O'Brien

Katherine L. O'Brien, also published as Kate O'Brien, is a Canadian-born pediatric infectious disease physician and vaccinologist directing immunization at the World Health Organization since 2019.

Katherine M. Flegal

Katherine M. Flegal, also published as K M Flegal, is an American epidemiologist who spent nearly 30 years at the CDC's National Center for Health Statistics studying obesity.

Kathleen Neuzil

Kathleen Neuzil is a physician-scientist in vaccinology who led large typhoid and rotavirus vaccine trials and directed the University of Maryland's Center for Vaccine Development.

Kathryn M. Edwards

Kathryn M. Edwards is an American pediatric infectious-disease specialist and vaccine researcher at Vanderbilt University whose clinical trials shaped US immunization policy for Hib, influenza, and pertussis.

Kathryn Maitland

Kathryn Maitland, also published as Kath Maitland, is a professor of pediatric tropical infectious diseases at Imperial College London, based in Kenya, known for the FEAST trial that changed WHO fluid guidelines.

Kay Dickersin

Kay Dickersin is an epidemiologist and Professor Emerita at Johns Hopkins whose research established publication bias in clinical trials; she led the US Cochrane Center and was elected to the National Academy of Medicine in 2007.

Kay‐Tee Khaw

Kay-Tee Khaw, born 1950, is a physician and epidemiologist, Emeritus Professor of Clinical Gerontology at the University of Cambridge, known for large studies of nutrition and health in later life.

Keersten Ricks

Keersten Ricks is an American infectious-disease diagnostician and epidemiologist at USAMRIID known for immunoassay-based biosurveillance of emerging diseases and a 2025 Presidential Early Career Award.

Keertan Dheda

Keertan Dheda is a South African pulmonologist and tuberculosis researcher who heads pulmonology at the University of Cape Town and Groote Schuur Hospital and directs its Centre for Lung Infection and Immunity.

Keith C. Norris

Keith C. Norris is an American nephrologist at UCLA who studies chronic kidney disease, hypertension, and health disparities, and was elected to the National Academy of Medicine in 2021.

Keith P. Klugman

Keith P. Klugman is a South African-trained infectious-diseases epidemiologist and physician who directs the Pneumonia program at the Bill & Melinda Gates Foundation and led the first phase III pneumococcal vaccine trial in Africa.

Kelly D. Brownell

Kelly D. Brownell is an American public-health researcher at Duke University known for obesity prevention research and for arguing that food taxes, not willpower alone, are needed.

Kenneth F. Maxcy

Kenneth F. Maxcy (1889–1966) was an American epidemiologist who showed that the mild typhus of the southeastern United States was flea-borne murine typhus, carried by rats.

Kenneth H. Mayer

Kenneth H. Mayer is an American infectious-disease physician, Harvard professor, and HIV prevention researcher who has led research at Fenway Health in Boston since 1980.

Kenneth J. Rothman

Kenneth J. Rothman is an American epidemiologist, professor at Boston University and Distinguished Fellow Emeritus at RTI International, known for the textbook Modern Epidemiology and for founding the journal Epidemiology in 1990.

Kenneth McIntosh (pediatric virologist)

Kenneth McIntosh is an American pediatric virologist and infectious-disease specialist at Boston Children's Hospital and Harvard, known for early HIV diagnosis in infants and childhood pneumonia.

Kenneth Stuart

Kenneth D. Stuart is an American molecular parasitologist who discovered RNA editing in trypanosomes, founded the Seattle Biomedical Research Institute, and joined the National Academy of Sciences in 2026.

Kenrad E. Nelson

Kenrad E. Nelson, also known as Kenrad Nelson, was an American infectious-disease epidemiologist and Johns Hopkins professor known for HIV and hepatitis C research, who died in 2022.

Kent A. Sepkowitz

Kent A. Sepkowitz, also known as Kent Sepkowitz, is an American infectious diseases physician who spent nearly four decades at Memorial Sloan Kettering Cancer Center in New York City.

Kevin C. Kain

Kevin C. Kain is a Canadian physician-scientist in tropical medicine and malaria, a University of Toronto professor and Tier I Canada Research Chair in Molecular Parasitology.

Kevin M. De Cock

Kevin M. De Cock is a Belgian-born infectious-diseases physician who led WHO's HIV/AIDS department in Geneva from 2006 to 2009, directed CDC Kenya, and retired from CDC in December 2020.

Kevin Marsh

Kevin Marsh is a British malariologist and Oxford professor who built and led the KEMRI-Wellcome Trust malaria research program in Kilifi, Kenya, for 25 years.

Kevin Winthrop

Kevin L. Winthrop is an American infectious disease epidemiologist and physician at Oregon Health & Science University, known for nontuberculous mycobacteria research and national treatment guidelines.

Kim Mulholland

Edward Kim Mulholland is an Australian pediatrician, vaccinologist, and epidemiologist known for Hib and pneumococcal vaccine trials in the Gambia that shaped childhood pneumonia prevention in developing countries.