title: Epidemiological and virological investigation of respiratory virus diseases in a county of Romania, 1970--1974.
mesh_terms: D000258:Adenovirus Infections, Human / Q000453:epidemiology; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D002648:Child; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007251:Influenza, Human / Q000453:epidemiology; D008875:Middle Aged; D018184:Paramyxoviridae Infections / Q000453:epidemiology; D012136:Respiratory Syncytial Viruses; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D012383:Romania; D012621:Seasons; D014777:Virus Diseases / Q000453:epidemiology*