Influenza in summer 1993.
D004196:Disease Outbreaks; D006801:Humans; D009980:Influenza A virus / Q000145:classification; D009981:Influenza B virus / Q000145:classification; D007252:Influenza Vaccines / Q000008:administration & dosage; D007251:Influenza, Human / Q000453:epidemiology* / Q000382:microbiology / Q000517:prevention & control; D012621:Seasons; D006113:United Kingdom / Q000453:epidemiology; D014481:United States / Q000453:epidemiology
D007252:Influenza Vaccines