Mannheimia haemolytica and the pathogenesis of pneumonic pasteurellosis [Review] [German]

摘要

Mannheimia (M.) haemolytica (formerly Pasteurella [P] hoemolytica) is the primary aetiological agent of pneumonic pasteurellosis - one of the most important respiratory diseases in cattle and sheep. While bovine pneumonic pasteurellosis is regarded to be mainly caused by M. hoemolytica serotype A1, and in Germany during the last years also by serotype A6, sheep can be infected by all serotypes although there is an increased prevalence of serotypes A2 and A5-7. The obligate pathogenicity of M. haemolytica is proven by isolation of pure cultures from pneumonic lungs as well as by infection studies.