An antigenic variant of the Hong Kong-68 influenza A 2 virus.
Both the haemagglutinin and the neuraminidase of influenza A2 virus have undergone progressive antigenic drift since this subtype first appeared in 1957.In 1968 a strain showing a much greater antigenic difference was isolated in Hong Kong. This variant has been responsible for epidemics throughout the world in the past 2 years.In the second year of its prevalence a small proportion of strains isolated showed a small but definite antigenic change, related principally to the haemagglutinin component.This new variant formed about 4% of all strains investigated and was detected in Britain, Portugal, France and New Zealand.
D000328:Adult; D000906:Antibodies; D000941:Antigens; D000956:Antigens, Viral; D002648:Child; D003429:Cross Reactions; D004196:Disease Outbreaks; D005602:France; D006385:Hemagglutination Inhibition Tests; D006723:Hong Kong; D006801:Humans; D007251:Influenza, Human / Q000276:immunology; D009439:Neuraminidase; D009520:New Zealand; D009975:Orthomyxoviridae / Q000201:enzymology / Q000276:immunology*; D011174:Portugal; D006113:United Kingdom
D000906:Antibodies; D000941:Antigens; D000956:Antigens, Viral; D009439:Neuraminidase