BocavirusHuman bocavirusParvoviridae InfectionsParvovirinaeRespiratory Tract DiseasesRespiratory Tract InfectionsBovine Respiratory Disease ComplexRespiration DisordersNasopharynxPhylogenyDNA, ViralParvovirusGastroenteritisMetapneumovirusPolymerase Chain ReactionSeasonsVirusesVirus DiseasesPneumonia, ViralSequence Analysis, DNACattle DiseasesLung DiseasesGenome, ViralMannheimia haemolyticaParvovirus B19, HumanMolecular Sequence DataChinaFecesChild, HospitalizedInfant, NewbornAsthma, Aspirin-InducedBronchitisAcute Disease