5 COVID-19 Clinical Trials in San Diego, CA (2026)

Q: How do I join a clinical trial in San Diego?

Browse available studies, click one that interests you, and complete the free eligibility form. A study coordinator at the San Diego research site will contact you.

Recruiting COVID-19 Studies in San Diego

NCT06667700Recruiting

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...

San Diego, CAPHASE33,082 participantsMerck Sharp & Dohme LLC

View Study Details

NCT06679140Recruiting

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...

San Diego, CAPHASE32,330 participantsPfizer

View Study Details

NCT06928272Recruiting

Long Covid (LC)-REVITALIZE - A Long Covid Repurposed Drug Study

The Long-Covid (LC)-Revitalize clinical study is testing repurposed drug treatments for Long Covid, involving adult participants from Brazil, Canada, Italy, Uganda, the United States, and Zambia. To q...

San Diego, CAPHASE3348 participantsDouglas D. Fraser

View Study Details

NCT07013474Recruiting

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...

San Diego, CAPHASE3300 participantsPfizer

View Study Details

NCT07464314Recruiting

A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults

This early-stage study will look at a new mRNA vaccine that combines defenses against both seasonal flu and COVID-19 in terms of its safety and how it builds protection. Healthy adults aged 65 to 85 w...

San Diego, CAPHASE1225 participantsGlaxoSmithKline

View Study Details

About COVID-19 Clinical Trials in San Diego

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.

There are currently 5 covid-19 clinical trials recruiting participants in San Diego, CA. These studies are seeking a combined 6,285 participants. Research is being sponsored by Merck Sharp & Dohme LLC, Pfizer, Douglas D. Fraser and 1 other organizations. Clinical trial participation is free and participants receive study-related medical care at no cost.

COVID-19 Clinical Trials in San Diego — FAQ

Are there covid-19 clinical trials in San Diego?

Yes, there are 5 covid-19 clinical trials currently recruiting in San Diego, CA. Browse the studies on this page to find one that fits.

How do I join a clinical trial in San Diego?

Browse the studies listed above, click one that interests you, and complete the free eligibility form. A study coordinator at the San Diego research site will contact you about next steps.

Are clinical trials in San Diego free?

Yes, clinical trial participation is always free. Study-related treatment, medical tests, and doctor visits are provided at no cost. Many San Diego studies also compensate for your time and travel.

What covid-19 treatments are being tested?

The 5 active trials in San Diego are testing new therapies including novel drugs, biologics, and treatment approaches for covid-19.

Data updated July 21, 2026 from ClinicalTrials.gov