Tag Richard R. Watkins

First discovered in 1894 in Hong Kong by Alexandre Yersin and Shibasaburo Kitasato, the genus Yersinia currently includes 18 species. Of these, only three have been identified as human pathogens: Y. pestis, Y. pseudotuberculosis, and Y. enterocolitica. While Y. pestis…

Introduction The serendipitous discovery of penicillin by Sir Alexander Fleming in 1928 was one of the greatest medical advances of the 20th century and marks the beginning of the antibiotic era. The term antibiotic originated with Selman Waksman in 1941,…