A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection
The primary objective of the study is to determine the relative efficacy of the investigational oral severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) vaccine tablet VXA-CoV2-3.3 compared to...
A Phase 2b, Randomized, Double-blind, Active-controlled Study of Single Dose CVXGA Intranasal COVID-19 Vaccine in Adults
The purpose of this trial is to assess the safety and relative efficacy of CVXGA (CVXGA50), a KP.2 containing vaccine, compared to COMIRNATY® (COVID-19 Vaccine, mRNA; 2024-2025 Formula), a currently a...
A Study to Learn About Variant-Adapted COVID-19 RNA Vaccine Candidate(s) in Healthy Children
The purpose of this clinical trial is to learn about the safety, extent of the side effects, and immune responses of the study vaccine (called variant-adapted BNT162b2 RNA-based vaccine) in healthy ch...
A Clinical Study of Molnupiravir to Prevent Severe Illness From Coronavirus Disease 2019 (COVID-19) in People Who Are High Risk (MK-4482-023)
Researchers are looking for other ways to prevent severe illness from COVID-19. COVID-19 is a virus that most often causes mild flu or cold-like symptoms. However, people with certain health condition...
A Study to Learn About How the Flu and COVID-19 Vaccines Act in Healthy People
The purpose of this study is to learn about how the flu and COVID vaccines act when given alone or when mixed together. This study is seeking healthy participants aged 18 or older. All participants i...
A Study to Learn About a Study Medicine Called Ibuzatrelvir in Adult and Adolescent Patients With COVID-19 Who Are Not Hospitalized But Are at Risk For Severe Disease
The purpose of the study is to evaluate whether ibuzatrelvir is effective and safe in adults and adolescents with COVID-19 who do not need to be in the hospital but who are at high risk for progressio...
A Study to Evaluate the Safety and Immunogenicity of the mRNA COVID-19 Vaccines in Healthy Children Between 6 Months to Less Than 6 Years of Age
This study will evaluate the safety and immunogenicity of the mRNA-1273.214 vaccine for severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) variant of concerns (VOCs) in participants aged 6 m...
I-SPY COVID-19 TRIAL: An Adaptive Platform Trial for Critically Ill Patients
The goal of this project is to rapidly screen promising agents, in the setting of an adaptive platform trial, for treatment of critically ill COVID-19 patients. In this phase 2 platform design, agents...
A Study to Investigate the Immunogenicity, Reactogenicity, and Safety of mRNA-1083 (Influenza and COVID-19) Vaccine in Adults ≥18 to <65 Years of Age
The purpose of this study is to evaluate the immunogenicity, reactogenicity, and safety, of mRNA-1083 multicomponent influenza and COVID-19 vaccine in adults ≥18 to \<65 years of age....
RECOVER-SLEEP: Platform Protocol
The platform protocol is designed to be flexible so that it is suitable for a range of study settings and intervention types. Therefore, the platform protocol provides a general protocol structure tha...
Outpatient Treatment With Anti-Coronavirus Immunoglobulin
The primary objective of the Outpatient Treatment with Anti-Coronavirus Immunoglobulin (OTAC) (INSIGHT 012) trial is to compare the safety and efficacy of a single infusion of anti-COVID-19 hyperimmun...
Randomized Double-Blind Placebo-Controlled Trial EValuating Baricitinib on PERSistent NEurologic and Cardiopulmonary Symptoms of Long COVID
The overarching goal of this study is to determine if baricitinib, as compared to placebo, will improve neurocognitive function, along with measures of physical function, quality of life, post-exertio...
A Study to Learn About the Study Medicine Ibuzatrelvir in Adults With COVID-19 Who Are Severely Immunocompromised
This is a Phase 3, randomized, actively controlled, double-blinded, double-dummy, superiority study to evaluate the efficacy and safety of ibuzatrelvir alone and in combination with remdesivir IV comp...
A Study to Learn About The COVID-19 (Study) Vaccine (Called COMIRNATY) in People That Are Less Than 21 Years Old.
The purpose of this clinical trial is to learn about the safety and effects of the study vaccine (called COMIRNATY) for the potential prevention of COVID-19. This study is seeking participants who: 1...
A Study of S-892216 in Participants With COVID-19
The primary objective of this study is to investigate the antiviral effect of S-892216 in participants with coronavirus disease 2019 (COVID-19) due to severe acute respiratory syndrome coronavirus 2 (...
Phase III DAS181 Lower Tract PIV Infection in Immunocompromised Subjects (Substudy: DAS181 for COVID-19): RCT Study
This study will seek to enroll immunocompromised patients with Lower Tract parainfluenza infection. It also contains a sub-study to enroll patients with severe COVID-19....
NE3107 in Adults With Neurological Symptoms of Long COVID
Long COVID is a condition where debilitating symptoms can persist for months after a COVID-19 infection. This study aims to evaluate the effects of NE3107 on several neurological symptoms reported in ...
SARS-Cov-2 (COVID-19) Nasal Pharyngeal and Oral Pharyngeal Wash (SNOW) Trial
Adults (aged 18-65 years) recently diagnosed with SARS-CoV-2 infection who use a 4-day combined intervention of nasal washes with 1% baby shampoo solution and oral gargles with Listerine Antiseptic® w...
EPIC-Peds: A Study to Learn About the Study Medicine Called PF-07321332 (Nirmatrelvir)/Ritonavir in Patients Under 18 Years of Age With COVID-19 That Are Not Hospitalized But Are at Risk for Severe Disease
The purpose of this clinical trial is to learn about the safety, pharmacokinetics (pharmacokinetics helps us understand how the drug is changed and eliminated from your body after you take it), and ef...
AT1001 for the Treatment of Long COVID
The primary objective of this study is to evaluate the safety and efficacy of Larazotide (AT1001) versus placebo in children and adults 7 to ≤50 years of age who present with symptoms of Long COVID in...
A Study to Learn About COVID-19 RNA-Based Variant-Adapted Vaccine Candidate(s) Against SARS-CoV-2 in Adults, Including Those at Higher Risk of Severe COVID-19
The purpose of this study is to learn about the safety, tolerability, and immunogenicity of an updated vaccine against COVID-19. This study is seeking participants 18 through 64 years of age who are ...
A Phase 1/2A, Randomized Study of a T Follicular Helper (TFH)-Targeting Genetic Vaccine Strategy Designed to Induce Broad, Durable Immune Responses
The goal of this clinical trial is to test two investigational COVID-19 booster vaccines, called CoTend-s3BXBB and CoTend-BXBB, in healthy volunteers ages 40-64. The CoTend-s3BXBB vaccine includes a c...
SARS-CoV-2 CTLS for Mild to Moderate COVID-19 Disease
The 2019 Severe Acute Respiratory Syndrome (SARS) is a global pandemic secondary to a novel coronavirus - SARS-CoV-2. The reported case-fatality ratio for SARS-CoV-2 in the United States is 1.8% with ...
A Study of Baricitinib (LY3009104) in Children With COVID-19
The purpose for this study is to determine if the study drug baricitinib is effective and safe in hospitalized pediatric participants with Coronavirus disease 2019 (COVID -19) and to confirm the dose....
Top Cities for COVID-19 Clinical Trials
COVID-19 clinical trials are recruiting across 107 cities. Here are the cities with the most active studies:
About COVID-19
COVID-19 is an infectious disease caused by the SARS-CoV-2 virus that primarily affects the respiratory system. Long COVID (PASC) involves persistent symptoms weeks or months after initial infection. Treatment includes antiviral medications, monoclonal antibodies, and supportive care.
Clinical trials are advancing new treatments for covid-19. Currently, 24 studies are recruiting a combined 41,995 participants across the United States. Research is being conducted by 18 organizations including Vaxart, CyanVac LLC, BioNTech SE and 15 others.
2026 COVID-19 Research Landscape
As of March 2026, the covid-19 clinical trial landscape includes 24 actively recruiting studies across 107 cities in the United States. These studies are collectively seeking 41,995 participants, with an average enrollment target of 1,750 per study.
Research is being led by 18 different organizations, including Vaxart, CyanVac LLC, BioNTech SE, Merck Sharp & Dohme LLC, Pfizer, and 13 others. The large number of sponsors reflects significant research interest and investment in covid-19 treatment advancement.
Geographically, covid-19 trials are most concentrated in Los Angeles, California (11 trials); Phoenix, Arizona (8 trials); Washington D.C., District of Columbia (8 trials); San Francisco, California (7 trials); Aurora, Colorado (7 trials) and 7 other cities.
Featured COVID-19 Studies
Highlighted recruiting studies for covid-19, selected by enrollment size and research scope.
A Study to Evaluate VXA-CoV2-3.3 COVID-19 Vaccine Against Currently Approved/Authorized mRNA COVID-19 Injectable Booster Vaccine in Adults Previously Immunized Against COVID-19 Infection
The primary objective of the study is to determine the relative efficacy of the investigational oral severe acute respiratory syndrome coronavirus 2 (SARS-CoV2) vaccine tablet VXA-CoV2-3.3 compared to a currently recommended vaccine for the prevention of symptomatic Coronavirus Disease 2019 (COVID-19). In order to represent a more recently circulating SARS-CoV-2 variant, the main study endpoints ...
A Phase 2b, Randomized, Double-blind, Active-controlled Study of Single Dose CVXGA Intranasal COVID-19 Vaccine in Adults
The purpose of this trial is to assess the safety and relative efficacy of CVXGA (CVXGA50), a KP.2 containing vaccine, compared to COMIRNATY® (COVID-19 Vaccine, mRNA; 2024-2025 Formula), a currently approved COVID-19 vaccine in the prevention of symptomatic, RT-PCR-confirmed SARS-CoV-2 infection. The trial will enroll up to 10016 healthy participants.
A Study to Learn About Variant-Adapted COVID-19 RNA Vaccine Candidate(s) in Healthy Children
The purpose of this clinical trial is to learn about the safety, extent of the side effects, and immune responses of the study vaccine (called variant-adapted BNT162b2 RNA-based vaccine) in healthy children. The trial is divided into 5 individual studies or substudies based on age group and prior history of COVID-19 vaccinations. All participants in each of the 5 sub-studies will receive study vac...
Frequently Asked Questions About COVID-19 Clinical Trials
Are there covid-19 clinical trials near me?
Yes, there are 24 covid-19 clinical trials currently recruiting across 107+ cities in the United States, including Los Angeles, California; Phoenix, Arizona; Washington D.C., District of Columbia. Browse the studies above to find one at a location convenient for you.
How do I join a covid-19 clinical trial?
To join a covid-19 clinical trial: 1) Browse the available studies on this page, 2) Click on a study that interests you, 3) Check the study locations to find a site near you, 4) Review the eligibility criteria, and 5) Contact the study site or complete the eligibility form. The process is free and you can withdraw at any time.
Are covid-19 clinical trials free?
Yes, participation in covid-19 clinical trials is free. Study-related treatments, medical tests, and doctor visits are provided at no cost to participants. Many studies also offer compensation for your time and travel expenses.
What types of covid-19 treatments are being studied?
Current covid-19 clinical trials are testing a range of approaches. These include new drugs, combination therapies, medical devices, and other interventions sponsored by 18 research organizations.
Is it safe to participate in covid-19 clinical trials?
Clinical trials are carefully regulated by the FDA and institutional review boards (IRBs). All trials must follow strict safety protocols, and participants receive close medical monitoring throughout the study. You can withdraw from a trial at any time without penalty.
Data updated March 2, 2026 from ClinicalTrials.gov
About This Data
Clinical trial information on this page is sourced from ClinicalTrials.gov, a service of the U.S. National Institutes of Health (NIH) and National Library of Medicine (NLM). Study data is refreshed every hour to ensure accuracy.
Medical Disclaimer: The information provided on this page is for informational purposes only and does not constitute medical advice. Always consult with a qualified healthcare provider before making decisions about clinical trial participation or changes to your treatment plan.
Page reviewed by the HelloStudys Research Team · Last updated March 2, 2026 · Data from ClinicalTrials.gov