serotypes

Yersinia pestis: Introduction and morphology

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yersinia pestis

Introduction Formerly known as Pasteurella pestis. Falls in family enterobacteriaceae. Discovered in Honkong in 1894 AD by Yersin and Kitasato. Important medical species are Y.pestis, Y. pseudotuberculosis and Y. enterocolitica. Y. pestis responsible for causing plague whereas Y. pseudotuberculosis is a primary pathogen of rodents. Similarly, Y. enterocolitica causes enteric and systemic diseases. These diseases … Read more

Laboratory diagnosis of Leptospira

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Because of the variability in the clinical manifestations of infection and frequent absence of jaundice, leptospirosis should always be considered in case of undiagnosed pyrexia (PUO). It is done especially when the patient could have been exposed to infection through the nature or place of work or in some other way. After an incubation period … Read more