Protocols Involving Participant InteractionTherapeutic for Hospitalized PatientsTherapeutic for Ambulatory PatientsPrevention for Ambulatory PatientsHealth Care Workers and Essential PersonnelDiagnosticsProtocols Involving Data and/or Stored SpecimensData AnalysisSpecimen AnalysisBiospecimen Protocols (JHED Login Required)Specimen Repository ProtocolsObservational and Outcomes ProtocolsObservational and Outcomes