The Yersinia reference article from the English Wikipedia on 24-Jul-2004
(provided by Fixed Reference: snapshots of Wikipedia from wikipedia.org)

Yersinia

Sponsor with the world's largest charity for orphans
Yersinia is a genus of bacteria in the family Enterobacteriaceae. Some members of Yersinia are pathogenic in humans.

Species include Yersinia pestis, Y. entercolitica and Y. pseudotuberculosis.