Immunologic relationship between Page's and Sawata's serotype strains of Haemophilus paragallinarum
Kume, K.; Sawata, A.; Nakase, Y.
American Journal of Veterinary Research 41(5): 757-760
1980
ISSN/ISBN: 0002-9645 PMID: 7406296 Document Number: 156064
Immunologic relationship among Page's A, B and C and Sawata's 1 and 2 serotype strains of H. paragallinarum was investigated. In cross-protection tests , 2 distinct type-specific immunities existed among the strains used. All Page's serotype A strains (083, W, Georgia and Germany) were immunologically similar to Sawata's serotype 1 strain 221, although serotype C strain Modesto was similar to serotype 2 strain H-18. Cross-protection was not observed between these 2 serotypes. Strains Spross and 0222 of serotype B lacked pathogenicity and protective antigenicity.