Blood Specimen CollectionSpecimen HandlingUrine Specimen CollectionLaboratories, HospitalSensitivity and SpecificityClinical Laboratory TechniquesUrinePolymerase Chain ReactionBacteriological TechniquesReagent Kits, DiagnosticQuality ControlChlamydia InfectionsTime FactorsDisease OutbreaksReproducibility of ResultsBloodPaperUnited StatesPhlebotomyEvaluation Studies as TopicBlood PreservationHIV SeroprevalenceForensic MedicineInfant, NewbornVirologyEhrlichiaSubstance Abuse DetectionCytomegalovirusGas Chromatography-Mass SpectrometryDNA, BacterialPlasmaAIDS SerodiagnosisMicrobiological TechniquesCytomegalovirus InfectionsBacteremiaNeonatal ScreeningData CollectionEhrlichiosisNeoplastic Cells, CirculatingFiltrationCentrifugationFalse Positive ReactionsDNA, ViralProspective StudiesFetal BloodSeroepidemiologic StudiesBlood Chemical AnalysisGenotypeVirus CultivationDNA, ProtozoanCase-Control StudiesAutopsySequence Analysis, DNAHIV Infections