@article{mbs:/content/journal/jgv/10.1099/0022-1317-3-2-201, author = "Webster, R. G. and Pereira, H. G.", title = "A Common Surface Antigen in Influenza Viruses from Human and Avian Sources", journal= "Journal of General Virology", year = "1968", volume = "3", number = "2", pages = "201-208", doi = "https://doi.org/10.1099/0022-1317-3-2-201", url = "https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-3-2-201", publisher = "Microbiology Society", issn = "1465-2099", type = "Journal Article", abstract = "Summary Serological cross-reactions were detected between four avian influenza viruses and a human A 2/57 virus and between an avian (TURKEY/CANADA/63) and an equine (EQUI 2/MIAMI/63) strain. The reactions were detected by strain-specific complement fixation tests and neuraminidase inhibition but not by haemagglutination-inhibition. Specific antiserum to the neuraminidase of an A 2/57 virus also reacted with the four avian viruses showing that it was the neuraminidase antigen on the avian and human A 2 virus that were antigenically closely related. The possibility that these viruses may have arisen by recombination between human and avian influenza viruses in nature is discussed.", }