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Yersinia pestis (Y. pestis; formerly Pasteurella pestis) is a gram-negative, non-motile, coccobacillus bacterium without spores that is related to both Yersinia enterocolitica and Yersinia pseudotuberculosis, the pathogen from which Y. pestis evolved [1] [2] and responsible for the Far East scarlet-like fever.
Yersinia is a genus of bacteria in the family Yersiniaceae. [1] Yersinia species are Gram-negative, coccobacilli bacteria, a few micrometers long and fractions of a micrometer in diameter, and are facultative anaerobes. [2] Some members of Yersinia are pathogenic in humans; in particular, Y. pestis is the causative agent of the plague.
Septicemic plague is one of the three forms of plague, and is caused by Yersinia pestis, a gram-negative species of bacterium.Septicemic plague is a systemic disease involving infection of the blood and is most commonly spread by bites from infected fleas.
The Yersiniaceae are a family of Gram-negative bacteria that includes some familiar pathogens. For example, the type genus Yersinia includes Yersinia pestis, the causative agent of plague. This family is a member of the order Enterobacterales in the class Gammaproteobacteria of the phylum Pseudomonadota. [1]
Coliform and Streptococci are examples of non-motile bacteria as are Klebsiella pneumoniae, and Yersinia pestis. Motility is one characteristic used in the identification of bacteria and evidence of possessing structures: peritrichous flagella, polar flagella and/or a combination of both. [2] [3]
Gram-negative Yersinia pestis bacteria. The culture was grown over a 72-hour time period. Laboratory testing is required in order to diagnose and confirm plague. Ideally, confirmation is through the identification of Y. pestis culture from a patient sample.
Pneumonic plague is a severe lung infection caused by the bacterium Yersinia pestis. [3] Symptoms include fever, headache, shortness of breath, chest pain, and coughing. [1] They typically start about three to seven days after exposure. [2] It is one of three forms of plague, the other two being septicemic plague and bubonic plague. [3]
Enterobacterales is an order of Gram-negative, ... Salmonella enterica, and Yersinia pestis, ... Yersinia (1944) Yokenella (1985) Candidatus genera