Yersinia pestis

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Yer·sin·i·a pes·tis

a bacterial species causing plague in humans, rodents, and many other mammalian species and transmitted from rat to rat and from rat to humans by the rat flea, Xenopsylla; it is the type species of the genus Yersinia.

Yersinia pestis

Etymology: Alexandre E.J. Yersin; L, pestis, plague
a species of small gram-negative bacteria that causes plague. The primary host is the rat, but other small rodents also harbor the organism. A person without symptoms may be a carrier, but this happens rarely. Yersinia pestis is hardy, living for long periods in infected carcasses, the soil of the host's habitat, or sputum. Also called Pasteurella pestis. See also plague.

Yer·sin·i·a pes·tis

(yĕr-sin'ē-ă pes'tis)
A bacterial species that causes plague in humans, rodents, cats, and many other mammals; it is transmitted from rat to rat and from rat to human host by as many as 30 species of flea, including the rat flea Xenopsylla; the bacterium can also be transmitted by aerosol droplets dispersed by humans or animals (especially cats) manifesting a pneumonic form of plague, or by deliberate dissemination by means of an aerosol mechanism as a form of bioterrorism; the bacterium is the type species of the genus Yersinia.
Synonym(s): Kitasato bacillus.

Yersin,

Alexandre Émil Jean, Swiss bacteriologist and surgeon, 1863-1943.
Yersinia enterocolitica - a species causing yersiniosis.
Yersinia pestis - a species causing plague. Synonym(s): Kitasato bacillus
Yersinia pseudotuberculosis - a species causing pseudotuberculosis in birds and rodents; rarely in humans Synonym(s): Pasteurella pestis
yersiniosis - infectious disease caused by Yersinia enterocolitica.

Yersinia

a genus of ovoid or rod-shaped, nonencapsulated, gram-negative bacteria in the family Enterobacteriaceae.

Yersinia enterocolitica
often carried by many animal species, especially pigs, and associated with sporadic diarrhea in humans and animals. Farmed deer are highly susceptible.
Yersinia pestis
causes bubonic plague in humans and sylvatic plague in rodents and cats.
Yersinia pseudotuberculosis
causes yersiniosis in laboratory animals, wild rodents and domestic species, including cattle, sheep and cats. See also pyemic hepatitis.
Yersinia ruckeri
causes enteric redmouth and salmonid blood spot disease especially of Atlantic salmon fry and parr.
Yersinia tularensis
see francisellatularensis.
References in periodicals archive ?
The plague bacillus is believed to have originated <20,000 years ago in central Asia (2), from which it has spread on multiple occasions and caused 3 well-documented pandemics (1).
We also reiterate the potential risk for human infection by the plague bacillus (Yersinia pestis) as a result of bed sharing, as illustrated by the case reported from Oregon in 2010 (5).
Mechanisms range from the relatively simple, as with the plague bacillus, Yersinia pestis, to the elaborately intricate, as with parasites in the genera Plasmodium and Leishmania.
Yersinia infections: centennial of the discovery of the plague bacillus.
The hypothesis of recent importation of the plague bacillus in Kehailia is therefore tempting but is tempered by the fact that 1) the grain is primarily imported from Europe, which is not affected by plague, and from North America where natural foci exist but have very limited areas of overlap with those regions where cereal grains are grown, 2) no higher mortality rate in the murine population of the port was noted, 3) no human cases occurred in this sector of the city, and 4) a 3IS-restriction fragment length polymorphism (11) analysis grouped these strains in a cluster clearly distinct from the strains isolated from Africa and America (V.
Except during the 2 months of August and September 1997, bubo samples arrived at the central plague laboratory in Antananarivo as long as 2 or 3 weeks after being collected, which led to false-negative results because they were contaminated or the plague bacillus had died.