| Developing and Testing a COVID-19 Vaccination Acceptance Intervention (NCT05027464) | VA Office of Research and Development | 2022-04-05 |
| Prospective Observational Study to Evaluate a Possible Change in APS Antibody Profiles After COVID-19 Infection or Vaccination (NCT05313048) | Cardioangiologisches Centrum Bethanien | 2022-03-15 |
| Post Vaccination Adverse Events in Covid-19 Vaccine Recipients (NCT05254977) | Islamia University of Bahawalpur | 2022-02-26 |
| Randomized Trial of COVID-19 Booster Vaccinations (Cobovax Study) (NCT05057169) | The University of Hong Kong | 2021-11-18 |
| Safety and Effectiveness of COVID-19 Vaccine in Kidney Transplant Recipients (NCT05156086) | Seoul National University Hospital | 2021-11-16 |
| The Effect of Covid-19 Vaccination in Patients Undergoing IVF (NCT05063942) | Shanghai First Maternity and Infant Hospital | 2021-10-01 |
| Reducing Vaccine Hesitancy (VH) And Vaccine Refusal (VR): Its' Correlation Factors and an Educational Intervention Programme (NCT04930185) | Sunway University | 2021-09-01 |
| Myocardial Injury and Outcomes Following COVID-19 Vaccination (MYOVAX Study) (NCT04967807) | University Health Network, Toronto | 2021-08-05 |
| HOPE Intervention for COVID-19 (NCT04376515) | University of California, Irvine | 2021-07-23 |
| Video Messages and Vaccination Intention (NCT04979416) | University of Southern California | 2021-07-21 |
| Determinants of Obtaining Covid Vaccination Among Health Care Workers (NCT04924894) | Assiut University | 2021-06-10 |
| RCT of Mushroom Based Natural Product to Enhance Immune Response to COVID-19 Vaccination (NCT04951336) | University of California, San Diego | 2021-06-10 |
| Gut Microbiota Profile and Its Impact on Immunity Status in COVID-19 Vaccinated Cohorts (NCT04980560) | Chinese University of Hong Kong | 2021-05-14 |
| Reactogenicity, Immunogenicity and Inflammatory Response by New COVID-19 Vaccine Platforms (NCT05315856) | Korea University Guro Hospital | 2021-03-01 |
| COVICI-SURV: COVID-19 Vaccination Around ICI Start and Survival (NCT07729241) | Groupe Hospitalier Pitie-Salpetriere | 2020-12-28 |