Virus isolations from children with respiratory diseases.
D000367:Age Factors; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D012141:Respiratory Tract Infections / Q000453:epidemiology / Q000382:microbiology*; D012383:Romania; D012621:Seasons; D014777:Virus Diseases / Q000453:epidemiology*; D014780:Viruses / Q000302:isolation & purification*