INFLUENZA VACCINATION IN THE ELDERLY.
D000368:Aged; D044466:Asian People; D004813:Epidemiology; D005853:Geriatrics; D006385:Hemagglutination Inhibition Tests; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human; D007494:Ireland; D014611:Vaccination
D007252:Influenza Vaccines
EPIDEMIOLOGY; GERIATRICS; HEMAGGLUTINATION INHIBITION TESTS; INFLUENZA; INFLUENZA VACCINE; INFLUENZA, ASIAN; IRELAND