Pasteurella spp

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Classic pasteurellosis in lung of a steer.

Pasteurella spp are a genus of Gram-negative, facultatively anaerobic bacteria which are known to be pathogenic to cattle.

Pasteurella multocida, together with Mannheimia haemolytica and Histophilus somni is involved in the etiology of Bovine respiratory disease.

These bacteria are generally susceptible to chloramphenicol, penicillins, tetracycline, enrofloxacin and ceftiofur[1].

A number of vaccines against bacterial respiratory pathogens are commercially available[2].


  1. Lamm CG et al (2012) Comparison of antemortem antimicrobial treatment regimens to antimicrobial susceptibility patterns of postmortem lung isolates from feedlot cattle with bronchopneumonia. J Vet Diagn Invest 24(2):277-282
  2. Larson RL & Step DL (2012) Evidence-based effectiveness of vaccination against Mannheimia haemolytica, Pasteurella multocida, and Histophilus somni in feedlot cattle for mitigating the incidence and effect of bovine respiratory disease complex. Vet Clin North Am Food Anim Pract 28(1):97-106