1. Pasteurella multocida
Formerly known as PASTEURELLA SEPTICA

2. Introduction
A group of related bacteria isolated from hemorrhagic septicemia in a variety of animals and birds are considered as strains of single sps. Designated as P.multocida

3. Morphology Non motile Gram negative bacilli Non sporing
It resembles Yersinia in morphology

4. Culture Blood agar: moist, mucoid, and slimy growth
(smooth watery colonies)
Nutrient broth: granular
deposits at the bottom of
test tube
Mac conkey agar:
colourless, non lactose
fermenting
Yersinia
pasteurella

5. Bio-chemical reactions
Catalase: positive
Oxidase: positive

6. Indole: positive
Nitrate red.: +ve
Gelatin: positive
Lactose: non fermentor

7. Pathogenesis
Often present in upper respiratory tract of animals such as sheep, dogs, cats, rats, and cattle
Some times commensals in humans
Infection Is by animal bites or trauma

8. Clinical manifestation
Local suppurative infections after bite
Wound infections,
Cellulitis,
Abscess,
Osteomyelitis.
Meningitis following head injury.
Respiratory tract infection.
Pneumonia, bronchitis, sinusitis
Appendicitis and its abscess

9. Treatment
Tetracyclin
Streptomycin
penicillin