| Not Yet Recruiting | Reducing Respiratory Virus Transmission in Bangladeshi Classrooms NCT06247059 | Stanford University | N/A |
| Unknown | NAC for Attenuation of COVID-19 Symptomatology NCT05074121 | Cambridge Health Alliance | Phase 2 |
| Unknown | Clinical Performance Study for EDAN's COVID-19/Flu A/Flu B/RSV Test Kits on Subjects Suspected of Respiratory NCT06175611 | EDAN Instruments Inc. | — |
| Completed | Safety and Immunogenicity of a Booster Vaccination With an Adapted Vaccine NCT06181292 | Hipra Scientific, S.L.U | Phase 2 / Phase 3 |
| Active Not Recruiting | PAxlovid loNg cOvid-19 pRevention triAl With recruitMent In the Community in Norway NCT05852873 | Haukeland University Hospital | Phase 3 |
| Completed | Rural Tailored COVID-19 Communication to Promote SARS-CoV-2 Antibody Testing in Saliva NCT06085547 | Michigan State University | N/A |
| Completed | Dual Sympathetic Blocks for Patients Experiencing Sympathetically-Mediated Symptoms From Long COVID NCT05638620 | Jonathann Kuo, MD | Phase 1 |
| Terminated | International Sites: Novel Experimental COVID-19 Therapies Affecting Host Response NCT05593770 | NEAT ID Foundation | Phase 2 / Phase 3 |
| Completed | SARS-CoV-2 and Acetylsalicylic Acid (SARA) NCT05073718 | Barcelona Institute for Global Health | Phase 3 |
| Completed | Topical Antibacterial Agents for Prevention of COVID-19 NCT05449392 | Yale University | Phase 1 |
| Completed | COVID Card Pilot Study to Detect Antibodies to SARS-CoV-2 NCT05196932 | University of Maryland, Baltimore | — |
| Unknown | Fourth Dose of mRNA COVID-19 Vaccine in Residents of LTCFs NCT04978038 | Mark Loeb | Phase 4 |
| Completed | Qualitative and Functional Investigation of Lipids in Patients With SARS-CoV2 Infection - In Search of Atherog NCT05476224 | Centre Hospitalier Universitaire Dijon | — |
| Terminated | IMM-BCP-01 in Mild to Moderate COVID-19 NCT05429021 | Immunome, Inc. | Phase 1 |
| Completed | Washing COVID-19 Away With a Hypertonic Seawater Nasal Irrigation Solution NCT05729204 | Larissa University Hospital | N/A |
| Withdrawn | Use of a Combined Regimen of Fluoxetine, Prednisolone and Ivermectin in the Treatment of Mild COVID-19 to Prev NCT05283954 | Oriol Mitja | Phase 2 / Phase 3 |
| Withdrawn | A Study of the Immunogenicity and Safety of SCTV01C in Population Aged ≥12 Years and Previously Vaccinated Wit NCT05239975 | Sinocelltech Ltd. | Phase 2 |
| Unknown | PROlectin M, a Nucleocapsid TErminal GaleCTin Antagonist for COVID-19 NCT05096052 | Bioxytran Inc. | Phase 3 |
| Completed | Awake Prone Positioning in Moderate to Severe COVID-19 NCT05083130 | Oxford University Clinical Research Unit, Vietnam | N/A |
| Terminated | Outcomes of Neonates Born to Mothers With SARS-CoV-2 Infection in Shanghai NCT05379452 | Children's Hospital of Fudan University | — |
| Completed | Evaluation of the Efficacy and Safety of Zinc in Viral Infections NCT05212480 | University of Monastir | N/A |
| Unknown | Remote Assessment of Outpatient With Severe Acute Respiratory Syndrome (SARS-CoV-2) NCT05125887 | University Hospital, Limoges | — |
| Completed | Safety and Immunogenicity of HDT-301 Targeting a SARS-CoV-2 Variant Spike Protein NCT05132907 | HDT Bio | Phase 1 |
| Terminated | Controlled Trial of Angiotensin Receptor Blocker (ARB) & Chemokine Receptor Type 2 (CCR2) Antagonist for the T NCT05122182 | University of Sydney | Phase 2 |
| Completed | Phase 1 Trial of ChAd68 and Ad5 Adenovirus COVID-19 Vaccines Delivered by Aerosol NCT05094609 | McMaster University | Phase 1 |
| Terminated | Leidos-Enabled Adaptive Protocol (LEAP-CT) for Evaluation of Post-exposure Prophylaxis for Newly-infected COVI NCT05077969 | Leidos Life Sciences | Phase 2 |
| Unknown | Clinical Study of the Third Dose Immunization Schedule of COVID-19 Inactivated Vaccine, (Vero Cells) in Adults NCT05164731 | Chinese Academy of Medical Sciences | Phase 3 |
| Unknown | Impact of COVID-19 SARS-CoV-2 Variability in ICU Hospitalized Patients With Severe Disease NCT05162508 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | COVID-19 MP Biomedicals SARS-CoV-2 Ag OTC: Clinical Evaluation NCT05584176 | MP Biomedicals, LLC | N/A |
| Completed | Immune Response to SARS-CoV-2/COVID-19 Vaccination in Sarcoidosis NCT05089565 | Northwestern University | — |
| Unknown | Myopericarditis After Messenger Ribonucleic Acid (mRNA) COVID-19 Vaccination in Children 5-11 Years Old NCT05186571 | Rigshospitalet, Denmark | — |
| 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 |
| Unknown | Masitinib in Patients With Symptomatic Mild to Moderate COVID-19 NCT05047783 | AB Science | Phase 2 |
| Unknown | Obstructive Sleep Apnoea Post Covid 19: Role of the Upper Airway Microbiome NCT05116657 | Royal College of Surgeons, Ireland | — |
| Terminated | Echinaforce COVID-19 Shedding Study NCT04999098 | A. Vogel AG | Phase 4 |
| Completed | Understanding the Long-term Impact of COVID-19 in Adults (RECOVER) NCT05172024 | NYU Langone Health | — |
| Completed | RECOVAC Repeated Vaccination Study NCT05030974 | University Medical Center Groningen | Phase 4 |
| 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 |
| Withdrawn | Evaluation of Efficacy, Safety and Immunogenicity of GX-19N in Healthy Individuals Who Have Received COVID-19 NCT05067946 | Genexine, Inc. | Phase 2 / Phase 3 |
| Unknown | Viral Kinetics of SARS-CoV-2 in Patients With COVID-19 in the Intensive Care Unit Undergoing Dental Procedures NCT05311410 | University of Sao Paulo General Hospital | N/A |
| Completed | The School SPIT Study - Elementary Schools in High COVID-19 Incidence Regions NCT05055492 | The Hospital for Sick Children | N/A |
| Completed | The School SPIT Study - Elementary Schools in Low COVID-19 Incidence Regions NCT05055505 | The Hospital for Sick Children | N/A |
| Completed | The School SPIT Study - COVID-19 Testing in Secondary Schools NCT05060510 | The Hospital for Sick Children | N/A |
| Completed | COVID-19 Immunogenicity of a Third Dose of mRNA-1273 Vaccine Among Cancer Patients NCT05054218 | H. Lee Moffitt Cancer Center and Research Institute | — |
| Completed | Reducing Spread of COVID-19 in a University Community Setting: Role of a Low-Cost Reusable Form-Fitting Fabric NCT04979858 | Georgia Institute of Technology | N/A |
| Completed | Efficacy of Ivermectin in COVID-19 NCT05076253 | Bangkok Metropolitan Administration Medical College and Vajira Hospital | Phase 1 / Phase 2 |
| Unknown | A Trial of Novaferon in Asymptomatic or Mild COVID-19 Patients NCT05017714 | Beijing 302 Hospital | Phase 3 |
| Unknown | Analysis of SARS-CoV2 Urine Viral Particles and Association With Proximal Tubular Dysfunction NCT04937712 | Central Hospital, Nancy, France | — |
| Unknown | Atorvastatin for Reduction of 28-day Mortality in COVID-19: RCT NCT04952350 | Mansoura University | Phase 3 |
| Recruiting | Outpatient Treatment With Anti-Coronavirus Immunoglobulin NCT04910269 | University of Minnesota | Phase 3 |
| Withdrawn | S-Nitrosylation Therapy of COVID-19 NCT04528771 | James Reynolds | EARLY_Phase 1 |
| Completed | Culturally-Targeted COVID-19 Communication and SARS-CoV-2 Antibody Testing Evaluation and Uptake NCT04957082 | Michigan State University | N/A |
| Unknown | Identification of Factors Associated With the Occurrence of Severe Forms of COVID-19 Infection in Patients Wit NCT05026892 | Assistance Publique - Hôpitaux de Paris | — |
| Active Not Recruiting | Pediatric COVID Outcomes Study (PECOS) NCT04830852 | Children's National Research Institute | — |
| Completed | Impact of SARS-CoV-2 (COVID-19) Infection, Treated in Ambulatory Care, on Long-term Quality of Life in a Paris NCT04893070 | Direction Centrale du Service de Santé des Armées | — |
| Completed | SARS-CoV-2 Immune Responses After COVID-19 Therapy and Subsequent Vaccine NCT04952402 | National Institute of Allergy and Infectious Diseases (NIAID) | Phase 4 |
| Completed | Assessment of the Immunization Levels Against Sars-Cov2 Virus in Subjects Who Have Received EU-approved COVID- NCT04954651 | University of Patras | — |
| Completed | Prevalence and Impact of COVID-19 on Maternal and Infant Health in African Populations NCT05303168 | Barcelona Institute for Global Health | — |
| Unknown | Determinants of the Level of Anti-SARS-CoV-2 IgG ANTibodiEs After Vaccination Study in Patients After Organ Tr NCT05162456 | Collegium Medicum w Bydgoszczy | — |
| Unknown | Efficacy and Safety of EXOSOME-MSC Therapy to Reduce Hyper-inflammation In Moderate COVID-19 Patients NCT05216562 | Dermama Bioteknologi Laboratorium | Phase 2 / Phase 3 |
| Completed | Hacettepe University COVID-19 Vaccinated's Health Cohort- Students of Health Sciences NCT05104385 | Hacettepe University | — |
| Unknown | Pregnant and Lactating Individuals & Newborns COVID-19 Vaccination Prospective Cohort Study NCT05115617 | Ottawa Hospital Research Institute | — |
| Completed | TekiTrust Tests to Determine the Level of SARS-COV-2/COVID-19 Neutralizing Antibodies in the Blood NCT05338762 | MiCo BioMed Co., Ltd. | — |
| Completed | Effect of Nasopharyngeal Wash With Normal Saline on SARS-CoV2 Viral Load NCT05525832 | Larissa University Hospital | N/A |
| Completed | COVAXIN in a Pediatric Cohort NCT04918797 | Bharat Biotech International Limited | Phase 2 / Phase 3 |
| Completed | the Prevalence of Oral Manifestation in Patients With SARS-CoV2 Infection NCT04893694 | Fayoum University | — |
| Completed | Fatigue a Long COVID-19 Symptom Substudy of FSC19-KN Trial NCT04883190 | Hegau-Bodensee-Klinikum Singen | — |
| Unknown | Investigation of Clinical Effectiveness of Propolis Extracts as Food Supplements in Patients With SARS-CoV-2(C NCT04916821 | Trabzon Kanuni Education and Research Hospital | N/A |
| Unknown | Evaluation of the Sofia SARS Antigen FIA Assay for COVID-19 NCT04953091 | University Hospital, Brest | — |
| Unknown | COVID-19 Antigen Rapid Test Kit NCT04889365 | Polish Society of Disaster Medicine | — |
| Unknown | Heterologous SARS-CoV-2 Vaccination With ChAdOx-1 and BNT162b2 NCT04907331 | Medical University Innsbruck | Phase 2 |
| Unknown | Determinants of the Level of Anti-SARS-CoV-2 IgG ANTibodiEs After Vaccination Study NCT05109585 | Collegium Medicum w Bydgoszczy | — |
| Completed | Effect of IMMUNEPOTENT-CRP on Serum Pro-Inflammatory Cytokines in Mild to Moderate COVID-19 NCT06676709 | Universidad Autonoma de Nuevo Leon | Phase 1 / Phase 2 |
| Completed | Follow-up of Covid-19 Long Term Sequelae NCT05097677 | Azienda Ospedaliera Universitaria Integrata Verona | — |
| Completed | Receptive Music Therapy on Anxiety and Vital Parameters in Hospitalized Covid-19 Patients. NCT05077306 | Azienda Ospedaliero-Universitaria Consorziale Policlinico di Bari | N/A |
| Unknown | Early Treatment of Vulnerable Individuals With Non-Severe SARS-CoV-2 Infection NCT04920838 | ANRS, Emerging Infectious Diseases | Phase 2 / Phase 3 |
| Completed | Osteopathic Manipulative Therapy Effects on Prolonged Post-COVID Olfactory Dysfunction NCT05112887 | Ohio University | N/A |
| Completed | FilmArray® and Management of Ventilator Associated Pneumonia in COVID-19 ARDS NCT05076240 | Centre Hospitalier Universitaire de Nīmes | — |
| Completed | Clinical Trial of BioBlock COVID-19 Nasal Spray Containing Anti-SARS-CoV-2 Antibodies Derived From Bovine Colo NCT04916574 | Icosagen Cell Factory | N/A |
| Terminated | Novel SARS-CoV-2 Point-of-care Testing NCT05034978 | Chinese University of Hong Kong | — |
| Unknown | Asymptomatic and Pre-symptomatic Transmission of SARS-CoV-2 in a Community Congregant Setting NCT05145803 | Colorado School of Public Health | — |
| Completed | Monitoring the Effectiveness and Safety of COVID-19 Vaccines at National University of Colombia NCT04887246 | Universidad Nacional de Colombia | — |
| Unknown | Canine COVID-19 Detection Phase 2 and 3 NCT04948190 | ARCTEC | — |
| Active Not Recruiting | Cellular Senescence and COVID-19 Long-Hauler Syndrome NCT04903132 | Mayo Clinic | — |
| Completed | Nigella 5 in the Treatment of SARS COV2 (COVID-19) NCT04914767 | Hôpital Universitaire Sahloul | Phase 1 |
| 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 | — |
| Terminated | Treatment of Nosocomial COVID-19 NCT04748588 | University of Calgary | Phase 4 |
| Completed | COVAG - Covid-19 Antigen Study - the Diagnostic Efficacy of SARS-CoV-2 Rapid Detection Tests NCT05074017 | Synlab Holding Deutschland GmbH | — |
| Completed | Rutgers Pilot for PREDICT- Patient LAB Test NCT05607043 | Rutgers, The State University of New Jersey | N/A |
| Completed | Effect of Different SARS-CoV-2 Vaccine Schedules and Vaccination Intervals on Reactogenicity and Humoral Immun NCT05076227 | Serge Thal | — |
| Completed | Rutgers Pilot for Dental Health Care Worker SARS-CoV-2 Testing NCT05607147 | Rutgers, The State University of New Jersey | N/A |
| Completed | Generic Testing of Antigen Tests for COVID-19 in Denmark NCT04913116 | Hvidovre University Hospital | — |
| Completed | Coronaltitude - Multicentric Evaluation of the Impact on Hypoxia Sensitivity of Patients With COVID-19 NCT05167357 | Institut de Formation et de Recherche en Médecine de Montagne | N/A |
| Terminated | BinaxNOW for Evaluating Children for Infection With SARS-CoV-2 (COVID-19) NCT05087524 | University of Wisconsin, Madison | N/A |
| Completed | Evaluation of the Effectiveness of Therapy for Patients With Covid-19 Using Food Supplements Viusid + Asbrip NCT04980534 | Catalysis SL | N/A |
| Completed | COVID-19 SARS-CoV-2 RAST Study NCT06452056 | Columbia University | — |
| Completed | COVID-19 Disease and Coagulopathy: Assessment of Clotting Factor Levels in Patients With SARS-CoV-2 Infection NCT04787510 | University Hospital, Ioannina | — |
| Recruiting | MISC COVID-19 Study in Pediatric Population NCT04844242 | Tuberculosis Research Centre, India | — |
| Unknown | LIPId Profile Changes in Inflammatory Conditions Induced by SARS-CORoronavirus-2 NCT05113836 | Assistance Publique - Hôpitaux de Paris | — |
| Suspended | Validation of HyperDetector for SARS-CoV-2 NCT05124496 | HyperSpectral APD | — |
| Unknown | Impact of a Monoamine Oxidase Inhibitor on the Phenotype of Blood Mononucleated Cells in Patients With COVID-1 NCT04590222 | Assistance Publique - Hôpitaux de Paris | — |
| Completed | Use of Saliva for COVID-19 Diagnosis NCT04953039 | University of Milano Bicocca | — |
| Completed | Safety and Efficacy of Rayaldee for Treating Mild to Moderate COVID-19 NCT04551911 | OPKO Health, Inc. | Phase 2 |
| Completed | Sildenafil in COVID-19 NCT04489446 | Universidad Nacional Andres Bello | Phase 1 / Phase 2 |
| Completed | Efficacy, Safety and Immunogenicity Study of SARS-CoV-2 Inactivated Vaccine NCT04508075 | PT Bio Farma | Phase 3 |
| Completed | COVID-19 Infection at Samusocial in Paris: Descriptive and Serological Survey NCT04470648 | Institut National de la Santé Et de la Recherche Médicale, France | — |
| Unknown | Ivermectin vs Combined Hydroxychloroquine and Antiretroviral Drugs (ART) Among Asymptomatic COVID-19 Infection NCT04435587 | Mahidol University | Phase 4 |
| Completed | The Efficacy of Vitamin D Supplementation in Patients With Severe and Extremely Severe COVID-19 NCT05092698 | Federal Research Clinical Center of Federal Medical & Biological Agency, Russia | N/A |
| Unknown | Clinical and Immunological Responses After SARS-CoV-2 Infection Causing COVID-19 NCT05038475 | Association "Naso Sano" Onlus | — |
| Completed | Surveillance Among Healthcare Workers for SARS-Coronavirus-2 Infection NCT05175963 | Farzanah Laher | — |
| Completed | SARS-CoV-2 PANDEMIC AND FAILED SPINAL ANESTHESIA NCT05067985 | Ankara City Hospital Bilkent | — |
| Completed | Hip Fracture and COVID-19 NCT04944329 | Centre Hospitalier Universitaire de Nīmes | — |
| Completed | Coronavirus Pediatric Serological Study NCT05128435 | Centre Hospitalier Universitaire Saint Pierre | — |
| Completed | Impact of COVID-19 Pandemic on Allogeneic Stem Cell Transplantation Organization : a French Experience NCT05088941 | Central Hospital, Nancy, France | — |
| Completed | Spinal Anesthesia Related Hypotension in SARS-CoV-2 (COVID-19) Pregnant Patients NCT05085652 | Ankara City Hospital Bilkent | — |
| Completed | Ventilation Associated Pneumonia and Covid-19 NCT05089968 | Centre Hospitalier Universitaire de Nīmes | — |
| Unknown | Characteristics of Critically Ill Patients With Severe Acute Respiratory Syndrome Coronavirus 2 Infection (COV NCT04948242 | Hospital Universitari Joan XXIII de Tarragona. | — |
| Approved For Marketing | Expanded Access Treatment Protocol: Remdesivir (RDV; GS-5734) for the Treatment of SARS-CoV2 (CoV) Infection ( NCT04323761 | Gilead Sciences | — |