Yersinia pestis (Y. pestis; formerly Pasteurella pestis) is a gram-negative, non-motile, coccobacillus bacterium without spores that is related to both Yersinia pseudotuberculosis and Yersinia enterocolitica. It is a facultative anaerobic organism that can infect humans via the Oriental rat flea (Xenopsylla … See more Y. pestis is a non-motile coccobacillus, a facultative anaerobic bacterium with bipolar staining (giving it a safety pin appearance) that produces an antiphagocytic slime layer. Similar to other Yersinia species, it tests negative for See more In the urban and sylvatic (forest) cycles of Y. pestis, most of the spreading occurs between rodents and fleas. In the sylvatic cycle, the rodent is wild, but in the urban cycle, the rodent is primarily the brown rat (Rattus norvegicus). In addition, Y. pestis can spread from … See more On January 15, 2024, researchers at the University of Oslo and the University of Ferrara suggested that humans and their parasites (most … See more Genome Several complete genome sequences are available for various strains and subspecies of Y. … See more In 1894, two bacteriologists, Alexandre Yersin of Switzerland and Kitasato Shibasaburō of Japan, independently isolated in See more • A list of variant strains and information on synonyms (and much more) is available through the NCBI taxonomy browser. • CDC's Home page for Plague See more
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WebJul 27, 2024 · Wayson, Wright or Giemsa stain may show up as a safety pin stained shape in the bacterium yersinia pestis, but may also appear as a plump rod or bacilli shape 1. The bacterium stains Gram-negative and cultures can grow at … Websafety pin appearance bacteriaon gram stainand growth on MHA WebA Gram stain is a laboratory test that checks for bacteria at the site of a suspected infection or in certain bodily fluids. A medical laboratory scientist processes the Gram stain, which gives relatively quick results, so healthcare providers can know if bacteria are present, and, if so, the general type (s). how to know mmr in valorant