Pasteurella multocida is a Gram-negative, nonmotile, penicillin-sensitive coccobacillus from the family Pasteurellaceae. Strains of the species are currently classified into five serogroups (A, B, D, E, F) based on capsular composition and 16 somatic serovars (1–16). P. multocida is the cause of a range of diseases in mammals and birds, including fowl cholera in poultry, atrophic rhinitis in pigs, and bovine hemorrhagic septicemia in cattle and buffalo. It can also cause a zoonotic infection in humans, which typically is a result of bites or scratches from domestic pets. Many mammals (including domestic cats and dogs) and birds harbor it as part of their normal respiratory microbiota.
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Pasteurella multocida in the context of Pasteurella
Pasteurella is a genus of Gram-negative, facultatively anaerobic bacteria. Pasteurella species are nonmotile and pleomorphic, and often exhibit bipolar staining ("safety pin" appearance). Most species are catalase- and oxidase-positive.The genus is named after the French chemist and microbiologist, Louis Pasteur, who first identified the bacterium now known as Pasteurella multocida as the agent of chicken cholera.
Pasteurella multocida in the context of Chicken cholera
Fowl cholera is also called avian cholera, avian pasteurellosis and avian hemorrhagic septicemia.
It is the most common pasteurellosis of poultry. As the causative agent is Pasteurella multocida, it is considered to be a zoonosis.