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TrialConditionsStatusPhaseUpdatedMore infoNCT ID
Safety, Tolerability, and Immunogenicity of MenABCWY Administered on Different Dosing Schedules in Healthy AdolescentsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderActive, not recruitingPhase 22026-09-28NCT05087056
Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Infants and Toddlers in ChinaBacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionRecruitingPhase 32026-09-22NCT07710872
A Study to Learn About the Safety of PENBRAYA During PregnancyBacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionRecruitingNot stated2026-08-17NCT07768163
Phase Ⅲ Trial of Group ACYW135 Meningococcal Conjugate Vaccine in Children Aged 2-6 YearsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderActive, not recruitingPhase 32026-08-10NCT07505888
Phase Ⅲ Trial of Group ACYW135 Meningococcal Conjugate Vaccine in Children Aged 12-23 MonthsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderRecruitingPhase 32026-08-10NCT07505836
Phase Ⅲ Trial of Group ACYW135 Meningococcal Conjugate Vaccine in Children Aged 6-11 MonthsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderRecruitingPhase 32026-08-10NCT07505823
Phase Ⅲ Trial of Group ACYW135 Meningococcal Conjugate Vaccine in Children Aged 3-5 MonthsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderRecruitingPhase 32026-08-10NCT07505810
A Clinical Trial of the ACYW135 Group Meningococcal Polysaccharide-Conjugated Vaccine (CRM197 Vector)Bacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderNot yet recruitingNot stated2026-08-03NCT07743411
Metagenomic Analysis of the Pharynx in High Risk PartnersBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Genital Diseases, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, Urogenital Diseases, bacterial infectious disease, bacterial meningitis, bacterial sexually transmitted disease, central nervous system disorder, central nervous system infectious disorder, gonorrhea, gram-negative bacterial infections, infectious disease, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorder, sexually transmitted diseaseNot yet recruitingNot stated2026-06-30NCT07671014
Immunogenicity and Safety Study of an Investigational Quadrivalent Meningococcal Conjugate Vaccine Administered in Healthy Children and Adolescents in ChinaBacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionActive, not recruitingPhase 32026-05-12NCT07135986
A Study on the Immune Response and Safety of a Vaccine Against N. Meningitidis Serogroup B Infection in Healthy Infants From 2 Months of AgeBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderActive, not recruitingPhase 42026-04-06NCT06113198
Phase IV Clinical Study of Immunogenicity of ACYW135 Group Meningococcal Polysaccharide Conjugate Vaccine (CRM197 Vector)Bacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderActive, not recruitingPhase 42026-03-04NCT05935176
Phase Ia Clinical Trial of Group ACYW135X Meningococcal Conjugate VaccineBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderNot yet recruitingPhase 12026-01-28NCT07374510
Investigating Gender and Sex Differences in Immune Responses Through Vaccination of Transgender and Cisgender PersonsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Meningitis, Meningococcal, Serogroup B, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderRecruitingPhase 42026-01-20NCT06832514
Clinical Trial of the Adsorbed Acellular Pertussis (Tricomponent) DTaP-Haemophilus Influenzae Type b (Conjugate)-ACYW135 Group Meningococcal (Conjugate) Combined VaccineActinomycetales infectious disease, Bacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Clostridium infectious disease, Corynebacterium Infections, Haemophilus influenzae Type b Infection, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, Pasteurellaceae Infections, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, diphtheria, gram-negative bacterial infections, gram-positive bacterial infections, haemophilus infectious disease, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorder, tetanusRecruitingPhase 12025-12-31NCT07203755
Immunogenicity and Safety of Meningococcal Conjugate Vaccine (EG-MCV4) in Healthy Adults Aged 19 to 55 Years OldBacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionRecruitingPhase 2 / Phase 32025-12-01NCT07204457
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
A Clinical Trial of ACYW135 Group Meningococcal Polysaccharide Conjugate Vaccine (CRM197 Vector) in 18-59 Year OldsBacterial Infections and Mycoses, Central Nervous System Bacterial Infections, Infections, Neisseriaceae Infections, Neuroinflammatory Diseases, bacterial infectious disease, bacterial meningitis, central nervous system disorder, central nervous system infectious disorder, gram-negative bacterial infections, meningitis, meningococcal infection, meningococcal meningitis, nervous system disorderActive, not recruitingPhase 32025-07-29NCT06226714
Meningococcal B Vaccine in Patients with AspleniaBacterial Infections and Mycoses, Infections, Neisseriaceae Infections, bacterial infectious disease, gram-negative bacterial infections, meningococcal infectionRecruitingPhase 22024-11-22NCT06025487
Safety and Immunogenicity Following Meningococcal and Pneumococcal Immunization Among Adult People Living With HIVAIDS, Bacterial Infections and Mycoses, Blood-Borne Infections, Genital Diseases, HIV infectious disease, Infections, Neisseriaceae Infections, RNA Virus Infections, Slow Virus Diseases, Urogenital Diseases, bacterial infectious disease, gram-negative bacterial infections, gram-positive bacterial infections, immune system disorder, inborn error of immunity, infectious disease, lentivirus infection, meningococcal infection, pneumococcal infection, sexually transmitted disease, streptococcal infection, uterine carcinosarcoma, viral infectious disease, viral sexually transmitted diseaseRecruitingPhase 42021-05-06NCT04875819