Influenza vaccination coverage levels in selected sites--United States, 1989.
D000368:Aged; D004196:Disease Outbreaks / Q000517:prevention & control*; D005260:Female; D006801:Humans; D007252:Influenza Vaccines; D007251:Influenza, Human / Q000517:prevention & control*; D008297:Male; D008875:Middle Aged; D014481:United States / Q000453:epidemiology; D014611:Vaccination / Q000706:statistics & numerical data
D007252:Influenza Vaccines