Walter Reed

Walter Reed (1851–1902) was an American Army physician who led the commission that demonstrated yellow fever is transmitted by mosquitoes, not direct contact.

James Carroll: James Carroll was an Army physician who served on the U.S. Army Yellow Fever Commission. He volunteered for a mosquito bite and helped test the commission’s transmission hypothesis.
Aedes aegypti: Aedes aegypti is a mosquito species that transmits yellow fever and several other viruses. The commission identified this mosquito as the vector carrying yellow fever.
United States Army Yellow Fever Commission: The United States Army Yellow Fever Commission was a four-member board formed in 1900 to investigate yellow fever in Cuba. Reed was appointed president of this board and coordinated its research.
Yellow fever: Yellow fever is an acute viral disease that can cause fever, jaundice, bleeding, and organ failure. The disease’s transmission was the question Reed’s commission resolved.
Camp Lazear: Camp Lazear was an experimental site near Havana where the Yellow Fever Commission conducted human exposure studies. Its controlled facilities separated mosquito exposure from contact with contaminated bedding.
Jesse William Lazear: Jesse William Lazear was an Army physician and bacteriologist who studied yellow fever in Cuba. His death after an infected mosquito bite became central to the commission’s history.
Yellow fever virus: Yellow fever virus is a mosquito-borne virus that causes yellow fever in humans and other primates. It is the infectious agent whose route of transmission Reed’s commission investigated.
Spanish–American War: The Spanish–American War was an 1898 conflict between Spain and the United States, fought mainly in Cuba and the Philippines. Wartime disease outbreaks in Cuba helped prompt the Army’s yellow fever investigation.
Mosquito control: Mosquito control comprises methods that reduce mosquito populations or prevent their contact with people. The commission’s findings made vector reduction a practical strategy against yellow fever.
Jesse Lazear’s death: Jesse Lazear’s death in 1900 followed his infection with yellow fever during the commission’s Cuba research. The loss underscored the danger faced by commission members and volunteers.

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