Article
Genetic and antigenic diversity in avian infectious bronchitis virus isolates of the 1940s.
Avian diseases - 1 Jan 2000
Jia Wei, Mondal S P, Naqi S A
Abstract excerpt
In order to verify a commonly held assumption that only Massachusetts (Mass) serotype of infectious bronchitis virus (IBV) was prevalent in the United States between the 1930s (when IBV was first isolated) and the 1950s (when the use of commercial IBV vaccines began), we examined 40 IBV field isolates from the 1940s. Thirty-eight of those isolates were recognized as Mass serotype viruses based on their reactivity...
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