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TrialConditionsStatusPhaseUpdatedMore infoNCT ID
Study on an Investigational Yellow Fever Vaccine Compared With YF-VAX in Adults in the USAFlaviviridae infectious disease, Flavivirus Infections, Infections, Mosquito-Borne Diseases, RNA Virus Infections, arbovirus infection, vector-borne disease, viral hemorrhagic fever, viral infectious disease, yellow feverActive, not recruitingPhase 22026-09-03NCT04942210
Study on an Investigational Quadrivalent Meningococcal Conjugate Vaccine (MenACYW Conjugate Vaccine) Administered as a 5- and/or 10-year Booster Doses in Children and Adolescents Vaccinated 5 or 10 Years Earlier as ToddlersHealthy Volunteers; Meningococcal ImmunisationActive, not recruitingPhase 32026-08-28NCT04936685
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe AcneAcneiform Eruptions, Skin and Connective Tissue Diseases, acne, sebaceous gland disorder, skin disorderRecruitingPhase 1 / Phase 22026-08-21NCT06316297
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Participants With Mild AcneAcneiform Eruptions, Skin and Connective Tissue Diseases, acne, sebaceous gland disorder, skin disorderRecruitingPhase 1 / Phase 22026-07-09NCT07013747
A Longitudinal Study of Epstein-Barr Virus (EBV) Reactivation in Adults Aged 18 to 29 YearsDNA Virus Infections, Epstein-Barr virus infection, Herpesviridae infectious disease, Infections, Tumor Virus Infections, viral infectious diseaseActive, not recruitingNot stated2026-06-11NCT07536048
Study on an Investigational Yellow Fever Vaccine Compared With Stamaril in Adults in Europe and AsiaFlaviviridae infectious disease, Flavivirus Infections, Infections, Mosquito-Borne Diseases, RNA Virus Infections, arbovirus infection, vector-borne disease, viral hemorrhagic fever, viral infectious disease, yellow feverActive, not recruitingPhase 22026-06-01NCT05011123
Study of a 4-Dose Regimen of a 21-valent Pneumococcal Conjugate Vaccine in Healthy Infants From Approximately 2 Months of AgePneumococcal ImmunizationActive, not recruitingPhase 32026-04-22NCT06736041
Dengvaxia US Pregnancy RegistryFlaviviridae infectious disease, Flavivirus Infections, Infections, Mosquito-Borne Diseases, RNA Virus Infections, arbovirus infection, dengue disease, vector-borne disease, viral hemorrhagic fever, viral infectious diseaseRecruitingNot stated2026-01-21NCT04486638
Safety and Immunogenicity of an Investigational Pentavalent Meningococcal ABCYW Vaccine Against Meningococcal Disease in Children, Toddlers, and InfantsHealthy Volunteers; Meningococcal ImmunizationActive, not recruitingPhase 1 / Phase 22026-01-20NCT06647407
Impact of FLU Vaccination on Nasal Resident Memory Immune Responses and Peripheral Respiratory-tropic Memory Immune ResponsesInfections, RNA Virus Infections, influenza, respiratory system disorder, respiratory tract infectious disorder, viral infectious diseaseActive, not recruitingPhase 42025-12-30NCT06824779
Study of a Human Metapneumovirus/Respiratory Syncytial Virus mRNA Vaccine Candidate Encapsulated in a Lipid Nanoparticle-based Formulation in Adults Aged 60 Years and OlderInfections, Mononegavirales infectious disease, Paramyxoviridae infectious disease, Pneumovirus Infections, RNA Virus Infections, respiratory syncytial virus infectious disease, viral infectious diseaseActive, not recruitingPhase 1 / Phase 22025-12-11NCT06686654
Observational, Passive Surveillance Program to Collect Information on Women and Their Offspring Exposed to MenQuadfi® During Pregnancy, in United States (US)Bacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionRecruitingNot stated2025-12-01NCT04843111
Study of the Safety and Immunogenicity of Catch-up Vaccination With a 21-valent Pneumococcal Conjugate Vaccine (PCV21) in Healthy Infants, Toddlers, Children, and AdolescentsBacterial Infections and Mycoses, Infections, bacterial infectious disease, gram-positive bacterial infections, pneumococcal infection, streptococcal infectionActive, not recruitingPhase 32025-10-06NCT06838000
Surveillance of Suspected Dengue Cases for Access to Care for Subjects Identified as Seronegative or Undetermined Before Receiving CYD Dengue Vaccine in Previous Clinical Studies in ColombiaFlaviviridae infectious disease, Flavivirus Infections, Infections, Mosquito-Borne Diseases, RNA Virus Infections, arbovirus infection, dengue disease, vector-borne disease, viral hemorrhagic fever, viral infectious diseaseActive, not recruitingNot stated2025-08-08NCT04113330