Viral infections of the respiratory tract in hospitalized children. A study from Oslo during a 90 months' period.
A diagnosis of 979 respiratory viral infections was made in hospitalized children. Respiratory syncytial virus greatly out-numbered the other viruses: it caused 58% of the total virus infections and occurred in winter epidemics. Influenza A and B virus occurred during late winter and spring, rhinovirus had a seasonal distribution towards spring and autumn, whereas adenovirus types 1, 2 and 5 had no distinct seasonal distribution. Whereas respiratory syncytial virus were mainly associated with bronchiolitis and adenovirus type 7 with pneumonia, rhinovirus infections were most often found in children with episodes of acute bronchial asthma. The influenza A and B and adenovirus types 1, 2 and 5 infections often occurred with extrarespiratory symptoms, especially febrile convulsions.
D000258:Adenovirus Infections, Human / Q000453:epidemiology; D002673:Child, Hospitalized; D002675:Child, Preschool; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D007251:Influenza, Human / Q000453:epidemiology; D009664:Norway; D010850:Picornaviridae Infections / Q000453:epidemiology; D012141:Respiratory Tract Infections / Q000453:epidemiology*; D010253:Respirovirus Infections / Q000453:epidemiology; D012621:Seasons; D014777:Virus Diseases / Q000453:epidemiology*