Yersinia

Yersinia pestis was discovered in 1894 by the Frenchman Alexandre Yersin.

The genus Yersina in the order Enterobacterales includes several species, 3 of which are of human medical importance:

• Yersinia pestis
• Yersinia enterocolitica
• Yersinia pseudotuberculosis

The other species:Y.frederiksenii, Y.intermedia, Y.kristensenii are of little importance. They may have opportunistic pathogenic significance in humans in rare cases.

Note: The collective term yersiniosis is used to describe infections caused by bacteria of the genus Yersinia.

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