USA eases flu vaccine restrictions.
Larkin
Marilynn
M
D006801:Humans; D007252:Influenza Vaccines / Q000008:administration & dosage* / Q000191:economics / Q000494:pharmacology / Q000600:supply & distribution*; D007251:Influenza, Human / Q000517:prevention & control*; D014481:United States; D014611:Vaccination / Q000331:legislation & jurisprudence*
D007252:Influenza Vaccines