AcyclovirIncidenceAntiviral AgentsHerpes SimplexHerpes GenitalisHerpes ZosterHerpes LabialisHerpesvirus 2, HumanValineSimplexvirusGanciclovirFoscarnetOintmentsEncephalitis, Herpes SimplexHerpes Zoster OphthalmicusProdrugsHerpesvirus 3, HumanGuanineStomatitis, HerpeticKeratitis, DendriticAdministration, OralThymidine KinaseHerpesvirus 1, HumanAdministration, TopicalChickenpoxVirus SheddingBell PalsyViral Plaque AssayEncephalitis, Varicella ZosterTime FactorsArabinofuranosyluracilDouble-Blind MethodRecurrenceRisk FactorsSkin Diseases, ViralRetrospective StudiesPhosphonoacetic AcidVirus ActivationIdoxuridineTreatment OutcomePharmaceutical VehiclesProspective StudiesInosine PranobexVidarabineCytomegalovirus InfectionsKeratitis, HerpeticSkin Diseases, InfectiousInfant, NewbornCohort StudiesFollow-Up Studies