Evaluation of an influenza immunization program.
D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007252:Influenza Vaccines / Q000009:adverse effects*; D007251:Influenza, Human / Q000276:immunology* / Q000517:prevention & control; D007271:Injections, Intradermal; D007279:Injections, Subcutaneous; D014611:Vaccination
D007252:Influenza Vaccines