title: Antibody response to the Hong Kong strain of influenza A2 virus in paired sera collected from influenza patients in 1965 to 1969.
mesh_terms: D000328:Adult; D005387:Finland; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007106:Immune Sera; D007251:Influenza, Human / Q000453:epidemiology / Q000276:immunology*; D008297:Male; D009975:Orthomyxoviridae / Q000276:immunology*
chemical_list: D007106:Immune Sera