The control of acute respiratory infections.
D000208:Acute Disease; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007251:Influenza, Human / Q000517:prevention & control; D011014:Pneumonia / Q000517:prevention & control; D012141:Respiratory Tract Infections / Q000517:prevention & control*