[Certain actual problems in epidemiology of important pediatric infections. 2. Seasonal factor in measles and whooping cough].
D002648:Child; D006801:Humans; D008457:Measles / Q000453:epidemiology*; D012621:Seasons; D014917:Whooping Cough / Q000706:statistics & numerical data*
MEASLES/epidemiology; WHOOPING COUGH/statistics
Nekotorye aktual'nye voprosy epidemiologii vazheishikh detskikh infektsii. 2. K voprosu o sezonnosti pri kori i kokliushe.