Influenza vaccines--fall 1978.
D000368:Aged; D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage / Q000009:adverse effects; D007251:Influenza, Human / Q000517:prevention & control; D008875:Middle Aged; D011634:Public Health; D012306:Risk; D014481:United States; D014611:Vaccination
D007252:Influenza Vaccines