William C. Campbell (scientist)

William C. Campbell
Campbell in 2015
Born (1930-06-28) 28 June 1930
CitizenshipIreland
United States (since 1964)
Alma materTrinity College Dublin
University of Wisconsin-Madison (PhD)
Known forDiscovery of avermectin
AwardsMembership of NAS (2002)
Nobel Prize in Physiology or Medicine (2015)
FRS (2020)
Scientific career
FieldsParasitology
InstitutionsMerck & Co.
Drew University
ThesisFascioloides magna (trematoda) with special reference to the adult in relation to disease (1957)

William Cecil Campbell FRS (born 28 June 1930) is an Irish-American microbiologist known for his work in discovering a novel therapy against infections caused by roundworms, for which he was jointly awarded the 2015 Nobel Prize in Physiology or Medicine. He helped to discover a class of drugs called avermectins, whose derivatives have been shown to have "extraordinary efficacy" in treating River blindness and Lymphatic filariasis, among other parasitic diseases affecting animals and humans. Campbell worked at the Merck Institute for Therapeutic Research 1957–1990, and has become a research fellow emeritus at Drew University.