Author affiliations: Author affiliations: The Key Laboratory of Animal Epidemiology and Zoonosis, Ministry of Agriculture, China Agricultural University, Beijing, People’s Republic of China (J.L. Feng, Y.X. Hu, J.X. Zhao, G.Z. Zhang); Animal Husbandry and Veterinary Station of Beijing, Beijing (Z.J. Ma, Q. Yu, X.D. Liu)
Figure 3. . Seroconversion and percentage survival of chickens experimentally infected with infectious bronchitis virus (IBV), People’s Republic of China. A) Survival of chickens after inoculation with IBV YN strain. B) Detection of IBV antibodies by ELISA at 21 days postinoculation. Cutoff titer = 396.
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