Richard Friedrich Johannes Pfeiffer

Richard Pfeiffer
c. 1928
Born(1858-03-27)27 March 1858
Died15 September 1945(1945-09-15) (aged 87)
Bad Landek (Prussia, now Lower Silesian Voivodeship, southwestern Poland)
CitizenshipGerman
Known forDiscovery of Endotoxins, Haemophilus influenzae, Typhoid vaccine, Micrococcus catarrhalis, staining histological preparations.
AwardsKussmaul medal (1918), Pasteur medal (1918), Ludwig-Darmstädter prize (1926),Fellow of the Royal Society
Scientific career
FieldsMicrobiology

Richard Friedrich Johannes Pfeiffer FRS (27 March 1858 – 15 September 1945) was a German physician and bacteriologist. Pfeiffer is remembered for his many fundamental discoveries in immunology and bacteriology, particularly for the discovery of endotoxins and the formulation of a vaccine for typhoid fever.