BocavirusHuman bocavirusParvoviridae InfectionsParvovirinaeRespiratory Tract InfectionsPhylogenyNasopharynxSequence Analysis, DNADNA, ViralParvovirusMolecular Sequence DataGastroenteritisPolymerase Chain ReactionVirusesRNA, Ribosomal, 16SDNA, RibosomalGenome, ViralMetapneumovirusParvovirus B19, HumanVirus DiseasesPneumonia, ViralChild, HospitalizedFeces