Alexandre Yersin

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Alexandre Yersin
Alexandre Yersin
Born	(1863-09-22)22 September 1863 Aubonne, Vaud, Switzerland
Died	1 March 1943(1943-03-01) (aged 79) Nha Trang, Annam, French Indochina
Nationality	Swiss and French
Known for	Yersinia pestis
Awards	Leconte Prize (1927)
Scientific career
Fields	Bacteriology
Institutions	École Normale Supérieure, Institut Pasteur

Alexandre Émile Jean Yersin (22 September 1863 – 1 March 1943) was a Swiss-French physician and bacteriologist. He is remembered as the co-discoverer (1894) of the bacillus responsible for the bubonic plague or pest, which was later named in his honour: Yersinia pestis. Another bacteriologist, the Japanese physician Kitasato Shibasaburō, is often credited with independently identifying the bacterium a few days earlier. Yersin also demonstrated for the first time that the same bacillus was present in the rodent as well as in the human disease, thus underlining the possible means of transmission.