Wilczyński J, Lukasik B, Torbicka E, Tranda I
Zakład Wirusologii Państwowego Zakładu Higieny, Warszawie.
Przegl Epidemiol. 1994;48(1-2):21-6.
In the period October 1992 to June 1993, 361 hospitalized children, under 2 years of age were examined by immunofluorescence method for respiratory viruses. In 163 (54.2%) of cases viral etiology was established. The dates obtained in this season were compared with the results from 7 past seasons. Etiological profile of infections no differ from previous, except lower occurrence infections caused by influenza A virus. The parainfluenza type 1 virus was more frequent in group smallest infants. The expiratory dyspnea was more frequent in children infected with respiratory viruses, especially RS viruses.