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Frequencies of respiratory viruses detected in nasopharyngeal swab in preschool children hospitalized because of lower respiratory tract infection. HEV human enterovirus, FluB influenza B, FluA influenza A, hMPV human metapnevmovirus, HCoV human coronavirus, ADV adenovirus, PIV parainfluenza virus, HBOV bocavirus, RSV respiratory syncytial virus, HRV human rhinovirus, N number of cases with particular viral infection
