Immunogenicity of Haemophilus paragallinarum serovar B strains.
Immunogenicity of three Haemophilus paragallinarum serovar B strains was investigated in cross-protection tests using monovalent vaccines prepared from the B strains, as well as one strain each of serovars A and C. A bivalent vaccine composed of the serovar A and C strains also was used. In the studies with the monovalent vaccines, the immunogenicity of serovar B strains was different from that of serovar A and C strains, although only partial serovar B-specific protection with the three strains was observed. Chickens vaccinated with the bivalent vaccine protected against challenge with one serovar B strain, as well as serovar A and C strains, but not against the other two serovar B strains.
Yamaguchi
T
T
Aburahi Laboratories, Shionogi & Co., Shiga, Japan.
Blackall
P J
PJ
Takigami
S
S
Iritani
Y
Y
Hayashi
Y
Y
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D001428:Bacterial Vaccines; D002645:Chickens; D003429:Cross Reactions; D006190:Haemophilus / Q000276:immunology*; D006192:Haemophilus Infections / Q000517:prevention & control / Q000662:veterinary*; D006385:Hemagglutination Inhibition Tests; D011201:Poultry Diseases / Q000517:prevention & control*; D013047:Specific Pathogen-Free Organisms; D014611:Vaccination / Q000662:veterinary
D000907:Antibodies, Bacterial; D001428:Bacterial Vaccines