An antigenic variant of the Hong Kong/68 influenza A 2 virus
- 1 March 1971
- journal article
- research article
- Published by Cambridge University Press (CUP) in Epidemiology and Infection
- Vol. 69 (1), 99-103
- https://doi.org/10.1017/s0022172400021306
Abstract
SUMMARY Both the haemagglutinin and the neuraminidase of influenza A 2 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.Keywords
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