Yersinia pestis

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Noun1.Yersinia pestis - a bacillus bacterium that causes the plague; aerosolized bacteria can be used as a bioweapon
B, bacillus - aerobic rod-shaped spore-producing bacterium; often occurring in chainlike formations; found primarily in soil
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References in periodicals archive ?
Y.pestis and 5 species of amebae co-occur in soils of prairie dog burrows undergoing plague epizootics.
Y.pestis 231 strain was isolated from the spleens of all guinea pigs that died after the challenge and 10 out of 30 surviving animals (33.3 [+ or -] 8.6 %).
The Black Death bacterium Y.Pestis was then spread by rats and fleas.