Enterovirus D, HumanEnterovirusEnterovirus B, HumanEnterovirus InfectionsEnterovirus A, HumanCoxsackievirus InfectionsPoliovirusVirus CultivationEnteroviruses, PorcineHand, Foot and Mouth DiseaseAntigens, CD55Receptors, VirusEnterovirus, BovineMyocarditisRhabdomyosarcomaCytopathogenic Effect, ViralCoxsackie and Adenovirus Receptor-Like Membrane ProteinSerotypingEchovirus InfectionsRNA, ViralAntibodies, ViralMeningitis, AsepticHerpanginaVirus ReplicationHeLa CellsMeningitis, ViralCell LineSewageEchovirus 9Capsid ProteinsRhinovirus