[Grippe in Valladolid; epidemic outbreak in the autumn of 1957].
D004196:Disease Outbreaks; D058872:Epidemics; D018737:Hand Strength; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology*; D012621:Seasons
INFLUENZA/epidemiology
Gripe en Valladolid; brote epidémico del otoño de 1957.