NCT06597370
Immunogenicity Induced by COVID-19 Vaccines in Mexican Population No drug interventions Not Available Not Available completed NCT04963790
Enabling Family Physicians to Reduce Vaccine Hesitancy and Increase Covid-19 Vaccine Uptake No drug interventions prevention Not Available terminated NCT05097053
A Heterologous 3rd COVID-19 Vaccine of MVC-COV1901 to Evaluate Immunogenicity and Safety in Adults With ChAdOx1-nCov-19 prevention 4 unknown_status NCT04691947
Safety and Immunogenicity of Two Different Strengths of the Inactivated COVID-19 Vaccine ERUCOV-VAC No drug interventions prevention 1 completed NCT05542693
Safety and Immunogenicity of the RNA MCTI CIMATEC HDT Vaccine prevention 2 unknown_status NCT05774171
To Explore the Protective Effect of SARS-CoV-2 Vaccination on Cancer Patients Infected With SARS-CoV-2 No drug interventions Not Available Not Available recruiting NCT05822219
Vaccine Hesitancy in Black/African Americans With Rheumatic Diseases No drug interventions health_services_research Not Available recruiting NCT05463419
A Phase II/III Study of PIKA Recombinant SARS-CoV-2 Vaccine as a Booster Dose. No drug interventions prevention 2 / 3 completed NCT04546841
Safety and Immunogenicity Trial of Multi-peptide Vaccination to Prevent COVID-19 Infection in Adults prevention 1 completed NCT05998824
COVID-19 Vaccination Hesitancy in Adults With Sickle Cell Disease No drug interventions treatment Not Available recruiting NCT05198596
A Study to Evaluate Immunogenicity and Safety of MVC-COV1901 Compared With AZD1222 in Adults Aged 18 Years and Above prevention 3 completed NCT04566276
ChulaCov19 Vaccine in Healthy Adults No drug interventions other 1 / 2 completed NCT04884776
Modulation of Gut Microbiota to Enhance Health and Immunity No drug interventions prevention Not Available active_not_recruiting NCT04838080
Safety and Immunogenicity of the Inactivated Koçak-19 Inaktif Adjuvanlı COVID-19 Vaccine Compared to Placebo No drug interventions prevention 1 unknown_status NCT04784689
Host Immune Response to Novel RNA COVID-19 Vaccination No drug interventions Not Available Not Available completed NCT05004740
Is COVID-19 Transmitted Through Human Milk? Implications for Breastfeeding and Human Milk Banking-Study 1c No drug interventions Not Available Not Available active_not_recruiting NCT05216601
A Study to Evaluate the Safety, Tolerability, and Immunogenicity of MVC-COV1901 or MVC-COV1901(Beta) Against COVID-19 prevention 1 completed NCT05752201
ARVAC-A New Recombinant Coronavirus Disease 2019 (COVID-19) Vaccine No drug interventions prevention 2 / 3 completed NCT05197712
Evaluation of the Safety, Tolerability, and Reactogenicity of the Baiya SARS-CoV-2 Vax 2 Vaccine for COVID-19 Disease No drug interventions prevention 1 active_not_recruiting NCT04751695
Oxidative Stress Parameters, Trace Element and Quality of Life in Men Before and After Covid-19 Vaccines No drug interventions screening Not Available unknown_status NCT05656508
ARVAC - A New Recombinant Coronavirus Disease 2019 (COVID-19) Vaccine No drug interventions prevention 1 completed NCT05426343
A Study to Evaluate Immunogenicity and Safety of MVC-COV1901 Vaccine Compared With AZD1222 prevention 3 completed NCT04751721
Oxidative Stress Parameters, Trace Element and Quality of Life in Women Before and After Covid-19 Vaccines No drug interventions screening Not Available unknown_status NCT05268679
Covid-19 Vaccine Response in Heart Transplant Recipients No drug interventions Not Available Not Available completed NCT05197153
A Study to Evaluate the Safety and Immunogenicity of Booster With AZD1222, mRNA-1273, or MVC-COV1901 Against COVID-19 prevention 2 completed NCT05455983
COVID-19 Vaccine and Development of Immune Thrombocytopenic Purpura No drug interventions Not Available Not Available unknown_status NCT04910971
Quantification of Binding and Neutralizing Antibody Levels in COVID-19 Vaccinated Health Care Workers Over 1 Year No drug interventions Not Available Not Available unknown_status NCT06167915
Safety and Immunogenicity of Recombinant COVID-19 Trivalent Protein Vaccine （CHO Cell）LYB002V14 in Booster Vaccination No drug interventions prevention 1 not_yet_recruiting NCT05142332
PROmotion of COvid-19 VA(X)Ccination in the Emergency Department - PROCOVAXED No drug interventions health_services_research Not Available terminated NCT05012800
Safety and Immunogenicity of COVID-19 Vaccine Administered in Older Adults No drug interventions prevention 4 unknown_status NCT04830800
A Phase 1/2 Safety and Immunogenicity Trial of COVID-19 Vaccine COVIVAC No drug interventions prevention 1 / 2 completed NCT05312619
The Burden of Lyme Disease (BOLD) in a Pandemic - Insights From an Online Cross-sectional and Prospective Cohort Survey No drug interventions Not Available Not Available unknown_status NCT04764422
Assess the Safety and Immunogenicity of NDV-HXP-S Vaccine in Thailand No drug interventions prevention 1 / 2 completed NCT04988048
Collaborative Study to Evaluate Heterologous Vaccination Against Covid-19 in Argentina prevention 2 unknown_status NCT05049226
Third Dose Vaccination With AstraZeneca or Pfizer COVID-19 Vaccine Among Adults Received Sinovac COVID-19 Vaccine prevention 2 completed NCT05873374
Evaluation of Safety, Tolerability, Reactogenicity, Immunogenicity of Baiya SARS-CoV-2 Vax 2 as a Booster for COVID-19 No drug interventions prevention 2 not_yet_recruiting NCT04915820
Iron and COVID-19 Vaccine Response No drug interventions basic_science Not Available completed NCT05288231
Cardiac Manifestation in Adolescent After Pfizer COVID-19 Injection in Thailand No drug interventions Not Available Not Available completed NCT05348629
Efficacy and Safety of Covid-19 Vaccine in Cardiac Patients No drug interventions Not Available Not Available unknown_status NCT05175989
SARS-CoV-2 Antibody Response in Children Aged 5-11 Years Following Vaccination Against COVID-19 No drug interventions Not Available Not Available unknown_status NCT05869968
SCIVAX: Biomarkers of Immune Dysfunction and Vaccine Responsiveness in Chronic SCI No drug interventions Not Available Not Available recruiting NCT05188469
Study to Assess the Safety, Tolerability and Explore the Immunogenicity of EG-COVID and EG-COVARo in Healthy Adult Volunteers No drug interventions prevention 1 / 2 active_not_recruiting NCT04898946
Serological Response to mRNA and Inactivated COVID-19 Vaccine in Health Care Workers in Hong Kong Not Available Not Available completed NCT05293223
Phase IIB Study of Recombinant Novel Coronavirus Vaccine prevention 2 active_not_recruiting NCT05553743
Researchers at UC San Diego Are Learning About the Benefits of Human Milk and How it Influences Infant and Child Health No drug interventions Not Available Not Available recruiting NCT04800965
Text-based Interventions to Promote COVID-19 Vaccinations No drug interventions health_services_research Not Available completed NCT04801524
Text-based Reminders to Promote COVID-19 Vaccinations No drug interventions health_services_research Not Available completed NCT05096260
Getting to Yes, Michigan! (G2YMI) No drug interventions prevention Not Available active_not_recruiting NCT06199934
Effectiveness of BNT162b2 Formulations Using State Vaccine Registry and Insurance Claims Data No drug interventions Not Available Not Available completed NCT05226390
Safety, Reactogenicity and Immunogenicity of a Novel MVA-SARS-2-ST Vaccine Candidate No drug interventions prevention 1 terminated NCT05508477
UNAIR Inactivated COVID-19 Vaccine Phase III (Immunobridging Study) prevention 3 unknown_status NCT05405283
Randomized, Single-blinded, Multicenter Trial Comparing the Immune Response to a 2nd Booster Dose of COVID-19 mRNA Vaccine (Pfizer-BioNTech) or Sanofi /GSK B.1.351 Adjuvanted Vaccine in Adults prevention 3 active_not_recruiting NCT05621928
Effectiveness of Vaccination Against COVID-19 in Brazil: Case-Control Study No drug interventions Not Available Not Available active_not_recruiting NCT04876885
The Future of Viral Communications: Video-Based Health Promotion Strategies for COVID-19 Vaccinations No drug interventions other Not Available unknown_status NCT05298800
Combined Immunization of COVID-19 Inactivated Vaccine With QIV and PPV23 No drug interventions prevention 4 unknown_status NCT05373459
Effect of a Third COVID-19 Booster Among Health Care Workers No drug interventions Not Available Not Available completed NCT04732819
Improving COVID-19 Vaccine Uptake in Nursing Homes No drug interventions health_services_research Not Available completed NCT04881396
Response of Haemodialysis Patients to BNT162b2 mRNA Cov-19 Vaccine No drug interventions Not Available Not Available completed NCT05471635
Variables Influencing Anti-COVID-19 Vaccinations Around the World: an Analysis Conducted on Aggregated Data Sourced From Institutional Databases to Understand Whether and How Different Variables Could Affect the Vaccine Coverage (WORLDCOV: Worldwide Determinants of COVID-19 Vaccination) No drug interventions Not Available Not Available unknown_status NCT04871165
Analysis of Immunogenicity, Safety and Efficacy of COVID-19 Vaccines in Immunosuppressed Individuals No drug interventions Not Available Not Available unknown_status NCT05556720
Bringing Optimised COVID-19 Vaccine Schedules To ImmunoCompromised Populations (BOOST-IC): an Adaptive Randomised Controlled Clinical Trial treatment 3 recruiting NCT05406908
Intradermal Tozinameran for Patients With Immune-mediated Dermatologic Diseases prevention 4 completed NCT04706143
Immunologic Responses to Single and Double Doses of COVID-19 Vaccines in Egyptians No drug interventions Not Available Not Available unknown_status NCT05012943
The ARCT-154 Self-Amplifying RNA Vaccine Efficacy Study (ARCT-154-01) No drug interventions prevention 2 / 3 completed NCT06272253
UNAIR Inactivated COVID-19 Vaccine INAVAC as Heterologue Booster (Immunobridging Study) in Adolescent Subjects No drug interventions prevention 0 active_not_recruiting NCT04888793
Immune Response to Anti COVID-19 Vaccine in Immunocompromised Patients: a Cohort Study No drug interventions Not Available Not Available completed NCT06259578
UNAIR Inactivated COVID-19 Vaccine as Homologue Booster (Immunobridging Study) No drug interventions prevention 0 recruiting NCT04895007
Comparative Evaluation of Covid-19 Vaccines Response No drug interventions Not Available Not Available unknown_status NCT05924685
PREPARE-iVAC Trial No drug interventions prevention 4 completed NCT04983537
Study to Evaluate the Immunogenicity and Safety of Heterologous SARS-CoV-2 Vaccine Schemes in an Elderly Population health_services_research 2 unknown_status NCT04832932
The COVID-19 Back-to-Normal Study: Analysis of Multiple Outcomes Not Available Not Available active_not_recruiting NCT05104359
COVID-19 Quantitative Antibody Titers & Booster Vaccinations No drug interventions Not Available Not Available completed NCT04962906
Study to Evaluate the Immunogenicity and Safety of Heterologous SARS-CoV-2 Vaccine Schemes health_services_research 2 completed NCT05185817
Effectiveness of COVID-19 Vaccine in Hematopoietic Stem Cell Transplant Patients No drug interventions prevention 2 unknown_status NCT04751734
Impact of Maternal COVID-19 Vaccines on Breast Milk No drug interventions Not Available Not Available completed NCT04852835
Follow-up of COVID-19 Vaccine Response in Strasbourg University Hospitals No drug interventions Not Available Not Available recruiting NCT05918939
UNAIR Inactivated COVID-19 Vaccine as Heterologue Booster (Immunobridging Study) prevention 0 unknown_status NCT05571657
COVID-19 Booster Dose Reminder/Recall for Adolescents No drug interventions health_services_research Not Available active_not_recruiting NCT05831826
Effectiveness and Safety of the Inactivated COVID-19 Vaccine in Thousands of Patients With Autoimmune Diseases in China No drug interventions Not Available Not Available recruiting NCT05293665
Platform Trial to Compare Homologous Boost of Authorized COVID-19 Vaccines and Heterologous Boost With UB-612 Vaccine prevention 3 active_not_recruiting NCT06282692
INAVAC Vaccine Phase III (Immunobridging Study) in Healthy Population Aged 12 to 17 Years Old No drug interventions prevention 3 recruiting NCT05027672
Strategies for Combining the First Component of Sputnik V With Other Adenoviral or mRNA-based Vaccines. health_services_research 2 unknown_status NCT05386355
Improving Pediatric COVID-19 Vaccine Uptake Using an mHealth Tool No drug interventions other Not Available completed NCT05162482
Combination Assessment Trial of COVID-19 Vaccines (COMBAT-COVID) No drug interventions treatment 2 unknown_status NCT05057182
Third Dose of mRNA Vaccination to Boost COVID-19 Immunity (mBoost Study) prevention 4 active_not_recruiting NCT04659941
Use of BCG Vaccine as a Preventive Measure for COVID-19 in Health Care Workers prevention 2 active_not_recruiting NCT04809948
Effects of COVID 19 Vaccine on Egyptian Population No drug interventions Not Available Not Available unknown_status NCT05729191
Evaluation of the Acceptance of the Anti-COVID-19 Vaccine Offer Among Pregnant Women No drug interventions Not Available Not Available completed NCT05079633
A Heterologous Prime-boost Study to Evaluate Immunogenicity and Safety of mRNA-1273 With MVC-COV1901 in Adults prevention 4 completed NCT05029245
IntraDermal Versus Intramuscular Comirnaty® Efficacy Study prevention 3 withdrawn NCT04695652
A Study to Evaluate MVC-COV1901 Vaccine Against COVID-19 in Adult prevention 2 completed NCT05175742
PTX-COVID19-B, an mRNA Humoral Vaccine, Intended for Prevention of COVID-19 in a General Population. This Study is Designed to Demonstrate the Safety, Tolerability, and Immunogenicity of PTX-COVID19-B in Comparison to the Pfizer-BioNTech COVID-19 Vaccine. prevention 2 completed NCT05048849
A Study to Evaluate the Safety, Tolerability, and Immunogenicity of COVID-19 Vaccine, CT-COV-21 Extension Study prevention 2 completed NCT05038618
A Study o Evaluate the Safety, Tolerability, and Immunogenicity of MVC-COV1901, CT-COV-21 Sub-study prevention 2 completed NCT05011526
A Study to Evaluate Immunogenicity and Safety of MVC-COV1901 Compared With AZD1222 Against COVID-19 in Adults prevention 3 completed NCT04834869
COVID-19 Vaccines Safety Tracking (CoVaST) Not Available Not Available recruiting NCT04730895
Investigating the Role of 13cis Retinoic Acid in the Treatment of COVID-19 and Enhancement of Its Spike Protein Based Vaccine Efficacy and Safety. prevention 1 / 2 unknown_status NCT04951388
A Study to Evaluate MVC-COV1901 Vaccine Against COVID-19 in Adolescents prevention 2 completed NCT04765436
PTX-COVID19-B, an mRNA Humoral Vaccine, is Intended for Prevention of COVID-19 in a General Population. This Study is Designed to Evaluate Safety, Tolerability, and Immunogenicity of PTX-COVID19-B Vaccine in Healthy Seronegative Adults Aged 18-64 No drug interventions prevention 1 completed NCT04822025
A Study to Evaluate MVC-COV1901 Vaccine Against COVID-19 in Elderly Adults prevention 2 completed NCT04818892
Immunogenicity of COVID-19 Vaccine in Patients With Inflammatory Bowel Disease No drug interventions Not Available Not Available completed NCT04760704
Covid-19 Vaccine Response in Elderly Subjects No drug interventions Not Available Not Available unknown_status