born June 3, 1868, Camagüey, Cuba
died Aug. 19, 1931, New Orleans, La., U.S.
Cuban-born U.S. physician, pathologist, and bacteriologist.
Reared in New York City, he received his M.D. from Columbia University. He was a member of the U.S. Army's Reed Yellow Fever Board, which discovered in 1901 the role of mosquitoes in transmitting yellow fever . As a professor at the University of Havana (1900–30), he became an influential leader of scientific medicine in Cuba.