title: RELATION between epidemics of acute bacterial pneumonia and influenza.
mesh_terms: D001699:Biometry; D058872:Epidemics; D006801:Humans; D007251:Influenza, Human / Q000453:epidemiology* / Q000706:statistics & numerical data*; D011014:Pneumonia / Q000453:epidemiology* / Q000706:statistics & numerical data*; D018410:Pneumonia, Bacterial