CircovirusCircoviridae InfectionsPorcine Postweaning Multisystemic Wasting SyndromeWasting SyndromeSwine DiseasesSwineParvovirus, PorcineCircoviridaePorcine respiratory and reproductive syndrome virusPorcine Reproductive and Respiratory SyndromeDNA, ViralAntibodies, ViralColostrumViral VaccinesCapsid ProteinsGenome, ViralViremiaWeaningVirus SheddingPolymerase Chain ReactionTorque teno virusDNA Virus InfectionsSpecific Pathogen-Free OrganismsReplication OriginVirus ReplicationOpen Reading FramesMolecular Sequence DataAntigens, ViralSus scrofaVirologyCoinfectionSemenPhylogenyLymph NodesAnimals, NewbornSequence Analysis, DNAViral ProteinsDNA PrimersCell LineBase SequenceVaccinationAbortion, VeterinaryGenotype