Serotypes of Pasteurella haemolytica in sheep in the midwestern United States
Frank, G.H.
American Journal of Veterinary Research 43(11): 2035-2037
1982
ISSN/ISBN: 0002-9645 PMID: 7181204 Document Number: 194114
Nasal secretions were collected from healthy lambs from flocks in Iowa and the surrounding states for 2 consecutive years (1980-81). The first year, 322 lambs from 61 flocks yielded 202 P. haemolytica isolates, representing 9 known serotypes and 30 untypable isolates. The second year, 249 lambs from 49 flocks yielded 73 isolates, representing 9 known serotypes and 7 untypable isolates. More isolates belonged to serotype 2 than to any other serotype. Serotypes 3, 4, and 10 (members of biotype T), were not isolated. Serotype 12 was also isolated and identified.