| Recruiting | ARISe at UMass Chan NCT07236034 | University of Massachusetts, Worcester | N/A |
| Recruiting | "Facts Tell… and With Stories Sell?" Combining Viewer-tailored Personal Human Papillomavirus (HPV) Narrative V NCT06587243 | Johns Hopkins Bloomberg School of Public Health | N/A |
| Recruiting | Pandemic Influenza Vaccine in Organ Transplantation (PIVOT Trial) NCT07240558 | University Health Network, Toronto | Phase 3 |
| Recruiting | Testing a Biometric Identification System to Improve Malaria Vaccine Completion NCT07261280 | University of Michigan | N/A |
| Active Not Recruiting | Kaiser Colorado Flu Nudge NCT07372950 | Kaiser Permanente | N/A |
| Completed | The Effect of ShotBlocker and Vibration on Pain During Vaccination NCT07379034 | Ataturk University | N/A |
| Recruiting | Can Stories Encourage the Elderly to Vaccinate? Combining Viewer-tailored Personal Narrative Videos With Infor NCT06890403 | Johns Hopkins Bloomberg School of Public Health | N/A |
| Recruiting | VITAL: Vaccination, Immunity, Time-restricted Eating, Aging and Lifestyle NCT07000708 | Charite University, Berlin, Germany | N/A |
| Completed | Conectados: Social Networks and Social Media for Vaccine Uptake NCT07096245 | University of California, San Francisco | N/A |
| Recruiting | Neutralizing Power of Serum Antibodies - 2 NCT07085611 | Centre Hospitalier Régional d'Orléans | N/A |
| Active Not Recruiting | Phase 3 Maternal Safety & Immunogenicity Trial of MVA-BN® in DRC NCT06844500 | Jean-Pierre Van geertruyden | Phase 3 |
| Recruiting | Phase 3 Infant Safety & Immunogenicity Trial of MVA-BN® in DRC NCT06844487 | Jean-Pierre Van geertruyden | Phase 3 |
| Recruiting | Can the Ergometric Test in Flu-like Syndrome Help in the Outcome Analysis of Unvaccinated Patients NCT07007377 | University of Sao Paulo | — |
| Not Yet Recruiting | Effect of Using Educational Robots During Vaccination on Fear and Pain in Children NCT06856395 | Balikesir University | N/A |
| Active Not Recruiting | Meningococcal Vaccination in Patients on Complement Inhibitors NCT06906692 | Fondazione Policlinico Universitario Agostino Gemelli IRCCS | — |
| Recruiting | Investigating Gender and Sex Differences in Immune Responses Through Vaccination of Transgender and Cisgender NCT06832514 | University Ghent | Phase 4 |
| Completed | The Effect of Distraction Method on Children's Pain and Fear Levels During Vaccine Administration NCT06686992 | Ataturk University | N/A |
| Not Yet Recruiting | CARD for Community Pharmacy Vaccinations - Phase 2 NCT06666868 | University of Toronto | N/A |
| Completed | Promotion of RSV Immunization Through Multiple Efforts NCT06640868 | Washington University School of Medicine | Phase 3 |
| Completed | PFAS Exposure and Immune Response to Vaccination in Adults NCT06588530 | Rutgers, The State University of New Jersey | Phase 4 |
| Completed | Increasing Measles Vaccination Coverage Through Supplementation With an SQ-LNS Incentive in Children Aged 6-23 NCT06387511 | Alliance for International Medical Action | N/A |
| Not Yet Recruiting | Implementation and Evaluation of Tailored Interventions to Increase MMR and/or HPV Vaccine NCT06361628 | University Medical Center Groningen | N/A |
| Completed | Effect of Using Virtual Reality Goggles on Fear and Pain Level During Vaccination in Children NCT06560320 | Burdur Mehmet Akif Ersoy University | N/A |
| Completed | Effect of Cold Application and Vibration in Reducing Pain During Vaccination in Children NCT06566378 | Burdur Mehmet Akif Ersoy University | N/A |
| Unknown | Efficacy and Durability of Hepatitis A Vaccination in Patients With Advanced Fibrosis and Cirrhosis NCT06277882 | Mahidol University | Phase 4 |
| Recruiting | COVID-19 Vaccine Effectiveness Against Recurrent Infection Among Lung Cancer Patients and Biomarker Research NCT06168032 | Peking Union Medical College Hospital | N/A |
| Completed | Improving Uptake of Pediatric Vaccines Through Religious Conferences and Vaccines-in-a-van in Aceh, Indonesia NCT06160999 | University of Michigan | N/A |
| Completed | Wastewater Surveillance to Boost COVID-19 Vaccine Uptake NCT05766189 | Syracuse University | N/A |
| Completed | Comparing Relative Strengths of Statistical Associations Between Psychological Traits and Vaccination-Related NCT07172074 | University of Iowa | N/A |
| Completed | Mhealth Supported Bundle to Improve Vaccination Completion NCT05520736 | Indiana University | N/A |
| Unknown | Cost-effectiveness of the Influenza Vaccination NCT05996549 | International Centre for Diarrhoeal Disease Research, Bangladesh | Phase 4 |
| Completed | Nudging Flu Vaccination in Patients at Moderately High Risk for Flu and Flu-related Complications NCT05509283 | Geisinger Clinic | N/A |
| Completed | The Effect of Telehealth Service About Childhood Vaccines on Vaccine Attitudes and Vaccination NCT05713526 | Gozde AKSUCU | N/A |
| Completed | Trusted Messengers: Intervention to Promote COVID-19 Vaccination NCT04981392 | University of Massachusetts, Worcester | N/A |
| Unknown | A Surveillance Study on Timing and Coverage Of Rotavirus and MenB Vaccine Co-administration in Campania Region NCT05212935 | Federico II University | — |
| Completed | COVID-19 Vaccine Hesitancy Among Nurses NCT05212974 | National Taiwan University Hospital | — |
| Completed | Use of Virtual Reality in the Reduction of Pain After the Administration of Vaccines Among Children in Primary NCT06313762 | Fundacio d'Investigacio en Atencio Primaria Jordi Gol i Gurina | N/A |
| Completed | Optimizing Weblinks Used in Digital Vaccination Invitations to Raise Trust and Booking Intention: Online Exper NCT07532967 | University of Essex | N/A |
| Unknown | The STOP-HPV Trial 5: Single Arm Evaluation of the Bundle NCT03609320 | University of California, Los Angeles | N/A |
| Completed | Optimizing Weblinks Used in Digital Vaccination Invitations to Raise Trust and Booking Intention: Online Exper NCT07516600 | University of Essex | N/A |
| Unknown | Improving Immunization Rates in Transplant Candidates Through the Use of a Health Information Technology Tool NCT04336735 | University of Colorado, Denver | N/A |
| Withdrawn | Understanding Public Attitudes Towards the COVID-19 Vaccination NCT05023512 | University of Massachusetts, Worcester | N/A |
| Recruiting | Vaccine Responses to SARS-CoV-2 and Other Emerging Infectious Diseases NCT05078905 | National Institute of Allergy and Infectious Diseases (NIAID) | — |
| Completed | COVID19 Vaccine in SOT Adult Recipients NCT05116748 | Fondazione IRCCS Ca' Granda, Ospedale Maggiore Policlinico | — |
| Completed | Using Explainable AI Risk Predictions to Nudge Influenza Vaccine Uptake NCT05009251 | National Bureau of Economic Research, Inc. | N/A |
| Completed | Lottery Incentive Nudges to Increase Influenza Vaccinations NCT05012163 | National Bureau of Economic Research, Inc. | N/A |
| Unknown | Impact of Information About Booster Vaccination Against DTPolio at 25 Years on This Booster Vaccination's Real NCT04869735 | Université de Reims Champagne-Ardenne | — |
| Recruiting | Dengue Vaccine Strategy in Children Aged 9 to 17 Years in the French Caribbean NCT04839757 | University Hospital Center of Martinique | — |
| Completed | Antibody After COVID-19 Vaccination NCT05057936 | Bangkok Metropolitan Administration Medical College and Vajira Hospital | — |
| Completed | COVID-19 Vaccination Take-Up NCT04867174 | National Bureau of Economic Research, Inc. | N/A |
| Completed | Measles and Rubella Vaccine Microneedle Patch Phase 1-2 Age De-escalation Trial NCT04394689 | Micron Biomedical, Inc | Phase 1 / Phase 2 |
| Unknown | The Response of the Immune System of Patients With End Stage Kidney Disease on Dialysis and Kidney Transplant NCT04932876 | University of Ioannina | — |
| Completed | The Impact of Theory-based Messaging on Covid-19 Vaccination Intentions NCT04813770 | University of Glasgow | N/A |
| Completed | A Clinical Trial to Evaluate the Immunogenicity and Safety of PPV23 Vaccine Revaccinations in the Elderly NCT04701788 | China National Biotec Group Company Limited | Phase 4 |
| Completed | Effect of Electronic and Mail Outreach From Primary Care Physicians for COVID-19 Vaccination Among Elderly Pat NCT05096026 | Kaiser Permanente | N/A |
| Recruiting | Vaccination With Autologous Dendritic Cells Loaded With Autologous Tumour Homogenate in Glioblastoma NCT04523688 | Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCS | Phase 2 |
| Completed | A Clinical Trial to Evaluate the Safety and Immunogenicity of PPV23 Vaccine Revaccinated in 60-70 Years Old NCT04700618 | China National Biotec Group Company Limited | Phase 4 |
| Completed | Spike-specific Cellular Immune Response After COVID-19 Vaccination NCT05102669 | IRCCS San Raffaele Roma | — |
| Completed | Virtual Reality for the Treatment of Pain in Pediatric Vaccination NCT04096833 | Cardenal Herrera University | N/A |
| Enrolling By Invitation | Pediatric Vaccinations NCT04936776 | NYU Langone Health | — |
| Completed | Effects of Iron Supplementation on Pediatric Vaccine Response NCT04744818 | Jessica Rigutto | N/A |
| Completed | COVID-19 Vaccination AZV 2021-2023 NCT05589233 | University Hospital Hradec Kralove | — |
| Unknown | Evaluation of the Safety and Immunogenicity of Hepatitis A Vaccine NCT04612634 | China National Biotec Group Company Limited | Phase 4 |
| Unknown | Evaluation of Safety and Immunogenicity of Combined Immunization of sIPV, DTaP and HepA NCT04636827 | China National Biotec Group Company Limited | Phase 4 |
| Completed | Psychological and Lifestyle Factors on Health Outcomes NCT04780867 | Liverpool John Moores University | N/A |
| Completed | Encouraging Flu Vaccination Among High-Risk Patients Identified by ML NCT04323137 | Geisinger Clinic | N/A |
| Completed | COVID-19 Vaccine Messaging, Part 1 NCT04460703 | Yale University | N/A |
| Completed | Assessing the Reliability of Self-Reported Hepatitis B Vaccination Status in Outpatients: Evaluation of Indivi NCT06998992 | Centre Hospitalier de Saint-Denis | — |
| Completed | Study of the Impact of an Intervention Performed by a Clinical Pharmacist on Patients at Risk of Pneumococcal NCT04734925 | Centre Hospitalier Universitaire de Nīmes | — |
| Unknown | Incidence of Influenza Infections and Determination of Vaccination Coverage Rate Among Healthcare Workers NCT04223544 | Wroclaw Medical University | — |
| Completed | Humeral Shaft Fractures : Outcomes of Straight Percutaneous Intramedullary Nailing With Dynamic Distal Locking NCT06999018 | Centre Hospitalier de Saint-Denis | — |
| Recruiting | A Phase II Study on Adjuvant Vaccination with Dendritic Cells Loaded with Autologous Tumor Homogenate in Resec NCT04166006 | Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCS | Phase 2 |
| Recruiting | Post-Vaccination Biological Collection NCT03875703 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | Evaluation of the Safety and Immunogenicity of Simultaneously Administration of sIPV and DTaP NCT04054882 | China National Biotec Group Company Limited | Phase 4 |
| Completed | Flu and Mood in Older Adults NCT03956329 | University of Nottingham | N/A |
| Unknown | Clinic Trial to Evaluate the Safety and Immunogenicity of Combined Immunization of sIPV and DTaP NCT04053010 | China National Biotec Group Company Limited | Phase 4 |
| Unknown | Harm Reduction Program For Informal PrEP Users In A Community-based Setting (seguiPrEP) NCT03996941 | BCN Checkpoint | — |
| Unknown | Virtual Reality vs. Standard-of-Care for Comfort During Immunizations in Children NCT03693469 | University of British Columbia | N/A |
| Withdrawn | The STOP-HPV Trial 6: Single Arm Evaluation of the Maintenance of the STOP-HPV Bundle NCT03609372 | University of California, Los Angeles | N/A |
| Completed | The STOP-HPV Trial 2: Performance Feedback Intervention NCT03599570 | University of California, Los Angeles | N/A |
| Unknown | The STOP-HPV Trial 3: Prompts Intervention NCT03599583 | University of California, Los Angeles | N/A |
| Unknown | The STOP-HPV Trial 4: Bundle Intervention NCT03609242 | University of California, Los Angeles | N/A |
| Unknown | Maternal Antibody in Milk After Vaccination NCT03982732 | St George's, University of London | — |
| Completed | The STOP-HPV Trial 1: Communication Intervention NCT03599557 | University of California, Los Angeles | N/A |
| Unknown | Evaluation of a Tdap-IPV (Tetanus, Diphteria, Pertussis and Inactivated Polio) Vaccination Remedial Strategy o NCT03587610 | Centre Hospitalier le Mans | N/A |
| Completed | Immune Response to Vaccinations in Hematopoietic Stem Cell Transplant Recipients NCT03659773 | Hospices Civils de Lyon | N/A |
| Completed | Immunogenicity and Safety of Sabin-IPV Replacement Vaccination NCT04051736 | China National Biotec Group Company Limited | Phase 4 |
| Completed | To Evaluate the Immunogenicity and Safety of Sequential Immunization Schedules of Sabin IPV and bOPV NCT04054492 | China National Biotec Group Company Limited | Phase 4 |
| Completed | Flu2Text: Text Message Reminders for 2nd Dose of Influenza Vaccine NCT03287830 | Columbia University | N/A |
| Completed | Efficacy of the Buzzy® Device on the Prevention of Health Care Induced Pediatric Pain in a Vaccination Center NCT03220555 | Nantes University Hospital | N/A |
| Completed | Assessment of Viral Shedding in Children Previously in Receipt of Multiple Doses of Live Attenuated Influenza NCT03104790 | Public Health England | Phase 4 |
| Completed | Vaccination In Pregnancy Gene Signature: VIP Signature Study NCT03284515 | St George's, University of London | — |
| Completed | Babies Born Early Antibody Response to Men B Vaccination: BEAR Men B NCT03125616 | St George's, University of London | Phase 4 |
| Completed | Microneedle Patch Study in Healthy Infants/Young Children NCT03207763 | Emory University | N/A |
| Completed | P3+ Intervention Phase NCT02898688 | Emory University | N/A |
| Completed | Synchronized Immunization NotifiCations NCT02710318 | Columbia University | N/A |
| Completed | Epidemiological Study on the Vaccination Coverage of the Population Aged 75 Years and Over in Picardy. Accordi NCT03132844 | Centre Hospitalier Universitaire, Amiens | — |
| Unknown | Vaccination for Children of H&O and Their Parents NCT03373656 | Children's Cancer Group, China | N/A |
| Completed | Immune Durability After VSV-EBOV Vaccination NCT02933931 | University Hospital, Geneva | — |
| Completed | Influenza Vaccine Randomized Educational Trial: Adult NCT02907645 | Columbia University | N/A |
| Unknown | To Look or Not to Look at the Needle During Vaccination NCT02937428 | University of Toronto | Phase 3 |
| Completed | Influenza Vaccine Attitudes, Intent, and Receipt: Pediatric NCT02907580 | Columbia University | N/A |
| Completed | Enhancing Health Care Access With Cellular Technology NCT03180138 | Johns Hopkins University | N/A |
| Unknown | Assessing the Impact of Mobile Phone Technology to Improve Health Nutrition and Population (HNP) Service Utili NCT03189004 | International Centre for Diarrhoeal Disease Research, Bangladesh | N/A |
| Withdrawn | Vaccination With Dendritic Cells Pulsed With Autologous Tumor Homogenate in Combination With HD-IL2 and Immuno NCT03226236 | Istituto Romagnolo per lo Studio dei Tumori Dino Amadori IRST S.r.l. IRCCS | Phase 2 |
| Completed | The Acceptability of the HPV Vaccine Postpartum and With Pediatric Well-child Visits: A Pilot Study NCT02602626 | University of North Carolina, Chapel Hill | — |
| Completed | Promoting Influenza Vaccination In General Practice Waiting Rooms NCT03239795 | Christophe Berkhout | N/A |
| Completed | Text Message Vaccine Reminders for Adolescents With Chronic Medical Conditions NCT02231957 | Columbia University | N/A |
| Completed | Recruiting to Clinical Trials on the Telephone NCT02570061 | Gorm Greisen | Phase 3 |
| Completed | Text Message Reminder-Recalls For Early Childhood Vaccination NCT01199666 | Columbia University | N/A |
| Completed | Tdap Vaccination for Infant Caregivers NCT01233401 | Yale University | — |
| Completed | Special Access Program IMVAMUNE® NCT03472014 | Bavarian Nordic | Phase 4 |
| Completed | Girls OnGuard: HPV Vaccination Uptake Among African American Adolescent Females NCT00813319 | Emory University | Phase 3 |
| Completed | School Influenza Vaccine vs Standard of Care With Nested Trial of 2 Parent Notification Intensities NCT01224301 | Monroe County Department of Public Health | N/A |
| Completed | Manicaland Cash Transfer Trial for Children in Zimbabwe NCT00966849 | Imperial College London | N/A |
| Completed | Evaluation of Immune Response Against the Strain of Neisseria Meningitidis B: 14, P1-7, 16 Patients Have to be NCT01054053 | University Hospital, Rouen | — |
| Completed | The Effect of Extended Yellow Fever Vaccine Information on Symptom Reports Following Vaccination NCT00708630 | University of Auckland, New Zealand | N/A |
| Completed | Efficacy of Influenza Vaccine in HIV Infected Adults NCT00757900 | University of Witwatersrand, South Africa | Phase 4 |
| Completed | A Phase IV Study to Evaluate the Immunogenicity and Safety in UK Laboratory Workers of Menitorix NCT00503165 | Public Health England | Phase 4 |
| Completed | Immunogenicity After Two Doses of Meningococcal Outer Membrane Vesicle Vaccine MenBVac NCT00450554 | University Hospital, Rouen | — |
| Completed | Long Term Immunogenicity Study of Engerix-B Vaccine in 10 Year Old Children and the Effect of Booster Injectio NCT00169858 | Laval University | Phase 4 |
| Withdrawn | Assessment of Novel Pneumococcal Conjugate Vaccination Scheduled in UK Infants NCT02918708 | Public Health England | Phase 4 |