Article
Genetic analysis of the S1 gene of 4/91 type infectious bronchitis virus isolated in Japan.
The Journal of veterinary medical science - 1 May 2009
Shimazaki Yohko, Watanabe Yuuko, Harada Makiko, Seki Yoshihisa, Kuroda Yorifumi, Fukuda Masaharu, Honda Eiichi, Suzuki Shoko, Nakamura Shigeyuki
Abstract excerpt
S1 gene sequences for infectious bronchitis virus (IBV) strains of the 4/91 genotype (commonly called 793B) isolated from field outbreaks in Japan were analyzed to ascertain the relationship to 4/91 vaccine strain. Three field isolates (JP/Wakayama/2003, JP/Iwate/2005 and JP/Saitama/2006) from flocks not immunized with a 4/91 type live IBV vaccine and one isolate (JP/Wakayama-2/2004) from a flock immunized with a...
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