The isolation of viruses from acute respiratory infections. 3. Some factors influencing the isolation of viruses from cases studied during 1962-64.
D000818:Animals; D006801:Humans; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D006113:United Kingdom; D014776:Virus Cultivation; D014777:Virus Diseases / Q000453:epidemiology*