| Withdrawn | Povidone Iodine Nasal Application to Prevent Intraoperative Spread of SARS-CoV-2 NCT05745467 | University of Iowa | Phase 4 |
| Unknown | NAC for Attenuation of COVID-19 Symptomatology NCT05074121 | Cambridge Health Alliance | Phase 2 |
| Terminated | Clinical Evaluation of the NeuMoDx SARS-CoV-2 Assay (COVID-19) NCT06360757 | QIAGEN Gaithersburg, Inc | — |
| Withdrawn | Leidos-Enabled Adaptive Protocol for Clinical Trials (LEAP-CT) in Hospitalized Patients With COVID-19 (Addendu NCT05085574 | Leidos Life Sciences | Phase 2 |
| Completed | SARS-COV-2 Screening in Dialysis Facilities NCT05225298 | Stanford University | N/A |
| Completed | Study of the Evolution of Olfactory Disorders in Patients With Persistent Loss of Smell Following COVID-19 NCT05133596 | Institut Pasteur | N/A |
| Completed | Efficacy and Safety of Nasal Spray Solution Containing Human IgG1 Anti-COVID-19 Antibody Cocktail NCT05358873 | Chulalongkorn University | N/A |
| Completed | Assessing the Immunogenicity and Safety of a HIPRA's Candidate Booster Vaccination in Adults Fully Vaccinated NCT05305573 | Hipra Scientific, S.L.U | Phase 2 |
| Unknown | Safety, Tolerability and Immunogenicity of Gam-COVID-Vac Vaccine in a Nasal Spray NCT05248373 | Gamaleya Research Institute of Epidemiology and Microbiology, Health Ministry of the Russian Federation | Phase 1 / Phase 2 |
| Unknown | SOLIDARITY Finland Plus Long-COVID NCT05220280 | Clinical Urology and Epidemiology Working Group | Phase 4 |
| Completed | A Phase III Trial to Assess the Safety and Immunogenicity of a HIPRA's Candidate Booster Vaccination Against C NCT05246137 | Hipra Scientific, S.L.U | Phase 3 |
| Completed | Epileptic Seizure in Epilepsy Patients After SARS-CoV-2 Vaccination NCT05341713 | Xijing Hospital | — |
| Terminated | Leidos-Enabled Adaptive Protocol (LEAP-CT) for Evaluation of Post-exposure Prophylaxis for Newly-infected COVI NCT05077969 | Leidos Life Sciences | Phase 2 |
| Completed | LEAP-CT for Treatment of COVID-19 Patients (Master Protocol) NCT05077332 | Leidos Life Sciences | Phase 2 |
| Completed | Photodynamic Therapy for COVID-19 Prevention NCT05184205 | Ondine Biomedical Inc. | N/A |
| Completed | Evaluation of the Post-vaccination Immune Response to COVID-19 in the New Caledonian Population NCT05135585 | Institut Pasteur | N/A |
| Active Not Recruiting | Does a Technology Enabled Multi-disciplinary Team-based Care Model for the Management of Long COVID and Other NCT05167227 | Family Health Centers of San Diego | N/A |
| Withdrawn | SABRE: A Single-arm Prospective Study Measuring Safety and Tolerability of SARS-CoV-2 Neutralising Antibodies NCT05393999 | Imperial College Healthcare NHS Trust | Phase 2 |
| Completed | Immunogenicity and Safety of a Booster Vaccination With a Recombinant Protein RBD Candidate Vaccine Against SA NCT05142553 | Hipra Scientific, S.L.U | Phase 2 |
| Completed | Safety and Immunogenicity of Recombinant Protein RBD Fusion Dimer Vaccine Against the Virus That Cause COVID-1 NCT05142514 | Hipra Scientific, S.L.U | Phase 2 |
| Unknown | Exploratory Regimen of Basiliximab for Treatment of Pulmonary Cytokine Storm in SARS-CoV-2 Hospitalized Adult NCT05013034 | Fort Worth Clinical Sciences Working Group | Phase 2 |
| Unknown | Muscle Evaluation of Patients Infected by the Coronavirus NCT05063214 | Hospital Israelita Albert Einstein | — |
| Unknown | Accelerating COVID-19 Clinical Recovery in the Outpatient Setting: Retrospective Analysis NCT05520944 | Dr. Ferrer BioPharma | — |
| Completed | Safety and Immunogenicity of RNA-based Vaccines Against SARS-CoV-2 Variants in Healthy Participants NCT05004181 | BioNTech SE | Phase 2 |
| Unknown | Safety and Immunogenicity of 2-dose Inactivated COVID-19 Vaccine in Kidney Transplant Recipients NCT04969614 | West China Hospital | — |
| Unknown | Study of Ameliorating Effect of COVID-19 mRNA Vaccine in Individuals Immunized With Inactivated Vaccine NCT04944381 | Qihan Li | N/A |
| Withdrawn | About Oral and Gut Microbiota in Intensive Care Unit : SARS-CoV-2 (COVID-19) Infection Impact. NCT04913142 | University Hospital, Toulouse | — |
| Completed | How COVID-19 Effects to Muscle Mass Change ın ICU? NCT05008562 | Ondokuz Mayıs University | — |
| Completed | Active Pharmacovigilance Study of Adsorbed COVID-19 (Inactivated) Vaccine NCT04845048 | Butantan Institute | — |
| Withdrawn | Safety and Long-term Effects of COVID-19 Vaccines in Patients With Pulmonary Tumor NCT04894682 | Guangdong Provincial People's Hospital | — |
| Completed | A Prospective Virtual Study of Patient Reported Behaviors and Health Outcomes in Individuals With COVID-19 NCT05042232 | Everly Health | — |
| Completed | Follow-up of Covid-19 Long Term Sequelae NCT05097677 | Azienda Ospedaliera Universitaria Integrata Verona | — |
| Completed | A Prospective Virtual Study to Evaluate the Longevity of IgG Antibodies in Individuals Exposed to COVID-19 NCT05042193 | Everly Health | — |
| Completed | Efficacy and Safety of Antimicrobial Stewardship Intervention in Hospitalized COVID-19 Patients (COVASP) NCT04896866 | University of Alberta | N/A |
| Completed | A Retrospective Study of COVID-19 Treatments NCT04949230 | ProgenaBiome | — |
| Completed | Reconvalescent Plasma/Camostat Mesylate Early in SARS-CoV-2 Q-PCR (COVID-19) Positive High-risk Individuals NCT04681430 | Heinrich-Heine University, Duesseldorf | Phase 2 |
| Unknown | The CircumVent Project: A CPAP/O2 Helmet Solution for Non-Invasive Ventilation Among Patients With COVID-19 NCT04929691 | New York University | N/A |
| Completed | Effects in Oxygenation and Hypoxic Pulmonary Vasoconstriction in ARDS Secondary to SARS-CoV2 NCT04998253 | Unidad Temporal COVID-19 en Centro Citibanamex | EARLY_Phase 1 |
| Completed | Dried Blood Spots for SARS-CoV-2 Serology (COVID-19). NCT04880122 | University Ghent | N/A |
| Completed | Studies to Determine Whether Oxygen Sensing is Impaired in Severe Acute Respiratory Syndrome Coronavirus 2 (SA NCT04954157 | University of Chicago | N/A |
| Completed | The Corona Study of Middle Norway NCT05638178 | St. Olavs Hospital | — |
| Completed | Pandemic Triage Score in Patients With Known or Suspected Severe Acute Respiratory Syndrome (SARS) CoronaVirus NCT04371471 | Groupe Hospitalier de la Rochelle Ré Aunis | — |
| Recruiting | Retrospective Analysis of Chest X-ray Severity Scoring System of COVID-19 Pneumonia NCT05181696 | Osijek University Hospital | — |