Pasteurella | |
---|---|
Scientific classification | |
Kingdom: | Bacteria |
Phylum: | Proteobacteria |
Class: | Gammaproteobacteria |
Order: | Pasteurellales |
Family: | Pasteurellaceae |
Genus: |
Pasteurella Trevisan 1887 |
Species | |
P. aerogenes |
P. aerogenes
P. anatis
P. avium
P. bettyae
P. caballi
P. canis
P. dagmatis
P. gallicida
P. gallinarum
P. granulomatis
P. langaaensis
P. lymphangitidis
P. mairii
P. oralis
P. pneumotropica
P. skyensis
P. stomatis
P. testudinis
P. trehalosi
P. ureae
P. volantium
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 bacteria now known as as the agent of chicken cholera.
Many Pasteurella species are zoonotic pathogens, and humans can acquire an infection from domestic animal bites. In cattle, sheep, and birds, Pasteurella species can cause a life-threatening pneumonia; in cats and dogs, however, Pasteurella is not a cause of disease, and constitutes part of the normal flora of the nose and mouth.Pasteurella haemolytica is a species that infects mainly cattle and horses: is the most frequent causative agent in human Pasteurella infection. Common symptoms of pasteurellosis in humans include swelling, cellulitis, and bloody drainage at the site of the wound. Infection may progress to nearby joints, where it can cause further swelling, arthritis, and abscesses.