Yersiniosis

Infectious Agent

Yersinia species are facultative anaerobic gram-negative coccobacilli. The most common species that cause yersiniosis are Yersinia enterocolitica (serogroups O:3, O:5,27, O:8, and O:9), but disease is also caused by Y. pseudotuberculosis. Yersinia pestis , the causative agent of plague, is discussed in this chapter under the heading Plague (Bubonic, Pneumonic, Septicemic).

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