Recommended composition of influenza virus vaccines for use in the 1998-1999 season.
D006801:Humans; D009980:Influenza A virus / Q000276:immunology; D009981:Influenza B virus / Q000276:immunology; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000453:epidemiology / Q000517:prevention & control*
D007252:Influenza Vaccines