Not applicableStudy completedNCT04696913What this trial is testingDoes COVID-19 Infection Increase the Risk of Pulmonary Embolism?Who this might be right forCovid19Pulmonary Embolism University of Aberdeen 347
Large-scale testing (Phase 3)Study completedNCT04442048What this trial is testingImmunization With IMM-101 vs Observation for Prevention of Respiratory and Severe COVID-19 Related Infections in Cancer Patients at Increased Risk of ExposureWho this might be right forCancerCovid-19 Canadian Cancer Trials Group 195
Large-scale testing (Phase 3)Study completedNCT04960202What this trial is testingEPIC-HR: Study of Oral PF-07321332/Ritonavir Compared With Placebo in Nonhospitalized High Risk Adults With COVID-19Who this might be right forCOVID-19 Pfizer 2,091
Not applicableStudy completedNCT04411459What this trial is testingRisk Factors for Prolonged Invasive Mechanical Ventilation in COVID-19 Acute Respiratory Distress SyndromeWho this might be right forCOVID-19Mechanical VentilationQuality of Life+3 more Azienda Usl di Bologna 470
Testing effectiveness (Phase 2)Study completedNCT06057064What this trial is testingStudy Will Assess the Safety, Neutralizing Activity and Efficacy of AZD3152 in Adults With Conditions Increasing Risk of Inadequate Protective Immune Response After Vaccination and Thus Are at High Risk of Developing Severe COVID-19Who this might be right forCOVID-19, SARS-CoV-2 AstraZeneca 116
Testing effectiveness (Phase 2)WithdrawnNCT05545319What this trial is testingLearn About the Medicine Called Nirmatrelvir Used in Combination With Ritonavir in People With Weakened Immune Systems or at Increased Risk for Poor Outcomes Who Are Hospitalized Due to Severe COVID-19Who this might be right forSevere Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2)Coronavirus Disease 2019 (COVID-19)Immunocompromised+2 more Pfizer
Not applicableStudy completedNCT04663906What this trial is testingOral Isotretinoin and Covid-19 InfectionWho this might be right forIsotretinoin Adverse ReactionCovid19 University of Aberdeen 148
Not applicableStudy completedNCT04401033What this trial is testingIncreased Risk of SARS-CoronaVirus-2 (SARS-CoV-2) Infection Associated With Endoscopy (DECORE Study)Who this might be right forSARS-CoV 2COVID Hospital del Rio Hortega 450
Not applicableUnknownNCT05193903What this trial is testingEvaluation of an Interactive Risk Information Tool to Increase COVID-19 Vaccination Incidence in Vaccine-hesitant PeopleWho this might be right forCOVID-19 Infection Charite University, Berlin, Germany 1,188
Not applicableStudy completedNCT04757298What this trial is testingOptimization of a New Adaptive Intervention to Increase COVID-19 TestingWho this might be right forCOVID-19 Testing University of Illinois at Urbana-Champaign 668
Post-approval studies (Phase 4)Study completedNCT04405999What this trial is testingPrevention of Infection and Incidence of COVID-19 in Medical Personnel Assisting Patients With New Coronavirus DiseaseWho this might be right forIncreased Risk of SARS-CoV-2 Infection Federal State Budgetary Institution, V. A. Almazov Federal North-West Medical Research Centre, of the Ministry of Health 50
Large-scale testing (Phase 3)Study completedNCT04359680What this trial is testingTrial to Evaluate the Efficacy and Safety of Nitazoxanide (NTZ) for Pre- and Post Exposure Prophylaxis of COVID-19 and Other Viral Respiratory Illnesses (VRI) in Healthcare Workers and Others at Increased Risk of SARS-CoV-2 InfectionWho this might be right forCOVID-19Viral Respiratory Illnesses Romark Laboratories L.C. 1,407
Not applicableStudy completedNCT04359212What this trial is testingIncreased Risk of VTE and Higher Hypercoagulability in Patients Recovered in ICU and in Medical Ward for COVID-19Who this might be right forCOVID-19 DiseaseThromboembolism, Venous Quovadis Associazione 90
Large-scale testing (Phase 3)UnknownNCT05689034What this trial is testingMulticenter Randomized Double-blind Placebo-controlled Study to Investigate Azvudine in Symptomatic Adults With COVID-19 at Increased Risk of Progressing to Severe IllnessWho this might be right forCOVID-19 Respiratory Infection Peking Union Medical College Hospital 1,096
Not applicableStudy completedNCT04403932What this trial is testingIncreased Risk of Severe Coronavirus Disease 2019 in Patients With Vitamin D DeficiencyWho this might be right forCoronavirus Disease 2019 (COVID-19) Hospital San Carlos, Madrid 300