Outbreaks of Infectious Bronchitis in Vaccinated Broilers on the Delmarva Peninsula

作者：Roy B. Johnson, Irwin M. Moulthrop, John A. Newman · 发表于：Avian Diseases · 年份：1972 · DOI：10.2307/1588763 · 被引用次数：8 · 研究领域：Animal Virus Infections Studies、Viral gastroenteritis research and epidemiology、Virus-based gene therapy research

Twenty-six virus isolations were made from broiler flocks in the Delmarva area experiencing respiratory disease between 3 and 5 weeks following vaccination for infectious bronchitis. The tracheal organ culture technique was used for serotyping by the constant-serum variable-virus serum neutralization test. Twenty-four of the isolates were the JMK type of infectious bronchitis virus. Serological relationships between the JMK, Gray, and Florida strains are reported.