Comparison of Hemagglutination-Inhibition, Agar Gel Precipitin, and Enzyme-Linked Immunosorbent Assay for Measuring Antibodies against Influenza Viruses in Chickens

Abstract

Individual variations in serological response to avian influenza virus infection were demonstrated after experimental infection of specific-pathogen-free chickens with H6N2 influenza virus. Homologous antibodies were detected from the 6th to the 157th day after infection using hemagglutination-inhibition or enzyme-linked immunosorbent assay and from the 11th to the 157th day by agar gel precipitation test.