Pasteurella multocida is a gram negative coccobacillus, which is non-motile and pencillin sensitive, responsible for causing zoonotic infections.
Pasteurella are part of normal flora found in mouth of domestic cats and dogs. They are transmitted by biting.
Pathogenesis is not fully understood. Capsule has anti phagocytic properties. Endotoxin is produced but there is no exotoxin.
• Endotoxin – lipopolysacchide
• Sutured animal bites
• Immunocompromised patients
• Rapidly spreading cellulitis at the site of animal bite
• Local wound infection
• Sub acute to chronic infections of lower respiratory tract
• Sample from wound site
• Gram negative rods
• Bipolar staining
Penicillin G or ampicillin to prevent P. multocida infection when bitten.