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A gram-negative facultative anaerobic and pleomorphic nonmotile bacterium involved as a normal flora in oral, gastrointestinal, respiratory and genital of animals.


Pasteurella species is oxidase and catalase positive mostly zoonotic pathogen that has been transmitted to human from domestic pet bites. It is known as part of natural respiratory, oral, gastrointestinal and genital floras of various animals both wild and domesticated.

Pasteurella is implicated in human infection pasteurellosis that manifest symptoms including cellulitis, swelling and bloody drainage at the site of the wounds as wells as in the nearby joints where it can also develop infections causing arthritis and swelling.

Pasteurella is commonly found in cats as well as in dogs with a large percentage on it and often in rabbits. Some of these bacteria considered as pathogenic to humans and animals.

Scientific Classification:

 Kingdom: Bacteria
 Phylum: Proteobacteria
 Class: Gammaproteobacteria
 Order: Pasteurellales
 Family: Pasteurellaceae
 Genus: Pasteurella

See also:

• Bacteria

• Pasteurellosis