John Andrew Crump MB ChB, MD, DTM&H, FRACP, FRCPA, FRCP is a New Zealand-born infectious diseases physician, medical microbiologist, and epidemiologist. He is Professor of Medicine, Pathology, and Global Health at the University of Otago^[1] and an adjunct professor of medicine, Pathology, and Global Health at Duke University.^[2] He served as inaugural co-director of the Otago Global Health Institute,^[3] one of the university's research centres.^[4] His primary research interest is fever in the tropics, focusing on invasive bacterial diseases and bacterial zoonoses.^[1]

Crump was born in Oamaru and raised on a farm at Okaramio, attending Havelock School^[5] and Marlborough Boys’ College.^[6] He graduated MB ChB in 1993 and received his MD^[7][8] in 2013 for research on clinical and laboratory aspects of HIV in Tanzania from the University of Otago Medical School. Crump trained as both an internist in infectious diseases and as a pathologist in medical microbiology in New Zealand, England,^[9] Australia and the US, and as an Epidemic Intelligence Service Officer with the US Centers for Disease Control and Prevention (US CDC).^[1]

Crump studies the diagnosis, management, and prevention of infectious causes of fever in the tropics other than malaria.^[10] He has advocated for a comprehensive approach to investigating febrile illness as a necessary progression from the traditional disease-specific approach in tropical medicine.^[11] He has contributed to describing the problem of malaria over-diagnosis,^[12] and also to appreciation of range of neglected causes of fever including invasive bacterial diseases,^[13][14] as well as bacterial zoonoses such as leptospirosis and Q fever.^[15][16][17] Much of his research is trans-disciplinary involving close collaboration between human health experts, veterinarians, ecologists, and social scientists, and following the so-called 'One Health' approach.^[18][19] He has led work characterizing the burden of typhoid fever,^[20][21] paratyphoid fever,^[20][21] and invasive nontyphoidal Salmonella disease^[22][23] that has contributed to diagnosis, management, and prevention efforts for these diseases, including vaccine deployment^[24] and vaccine development.^[25] He served as expert advisor on invasive Salmonella disease to the World Health Organization Foodborne Diseases Epidemiology Reference Group,^[26] and as a member of the WHO Strategic Advisory Group of Experts on Immunization Working Group on Typhoid Vaccines.^[27]

Crump has a research interest in ethics in global health training, spurred by concern for the unintended consequences of expansion of short-term global health training opportunities in low-resource areas.^[28] With Dr. Jeremy Sugarman, Crump co-chaired the Wellcome Trust-funded Working Group on Ethics Guidelines for Global Health Training (WEIGHT) that developed initial guidelines for responsible global health training programs.^[29] Crump has also highlighted the value of cosmopolitan principles and the challenges posed by health nationalism in global health responses.^[30]

Crump was awarded the 2005 US CDC James H. Steele Veterinary Public Health Award^[31] for outstanding contributions in the investigation, control, or prevention of zoonotic diseases or other animal-related human health problems. In 2012, Crump received the American Society of Tropical Medicine and Hygiene Bailey K. Ashford Medal^[32] for distinguished work in tropical medicine. Crump was awarded the 2021 University of Otago Dunedin School of Medicine Dean's Medal for Research Excellence.^[33] In 2022, Crump was awarded the Royal Society of Tropical Medicine and Hygiene Chalmers Medal for research of outstanding merit in tropical medicine and mentoring of junior investigators.^[34]

As of December 2023, Crump had published >300 scientific manuscripts, cited >50,000 times.^[35] He is a 2020 cross-field Clarivate Highly Cited Researcher, defined as having multiple papers ranked in the top 1% by citations for field and year.