title: [ON THE EPIDEMIOLOGY OF CASES SUSPECTED TO BE PRIMARY ATYPICAL PNEUMONIA].
mesh_terms: D000371:Agglutination; D002648:Child; D003139:Common Cold; D003937:Diagnosis, Differential; D006801:Humans; D007251:Influenza, Human; D011014:Pneumonia; D018410:Pneumonia, Bacterial; D011019:Pneumonia, Mycoplasma; D011024:Pneumonia, Viral
keywords: AGGLUTINATION; CHILD; COMMON COLD; DIAGNOSIS, DIFFERENTIAL; PNEUMONIA, VIRAL