Recommended composition of influenza virus vaccines for use in the 2001 influenza season.
D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000032:analysis*; D007251:Influenza, Human / Q000517:prevention & control*; D012680:Sensitivity and Specificity; D017778:Vaccines, Combined; D014944:World Health Organization
D007252:Influenza Vaccines; D017778:Vaccines, Combined