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Flu clinical trials in San Diego, CA

3 studies for Flu are looking for participants at sites in and around San Diego (within about 30 miles). Open a study to see who can join and how to contact the study team.

Recruiting for a study here? Feature it at the top of this page — $99 for 30 days →

A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age

RecruitingPhase 3Healthy volunteers welcome
  • GSK Investigational Site, San Diego
Ages 65 and older · All sexes · Updated Sep 18, 2026 · NCT07805707

Study to Assess Safety and Immunogenicity of an Egg-based H5N8 Influenza Vaccine at Multiple Dose Levels Adjuvanted With Matrix-M in Healthy Participants 18 Years of Age and Above.

RecruitingPhase 1/2Healthy volunteers welcome
  • California Research Foundation- Site Number : 8400007, San Diego
Ages 18 and older · All sexes · Updated Sep 15, 2026 · NCT07779408

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

RecruitingPhase 1
  • GSK Investigational Site, San Diego
Ages 65 to 85 · All sexes · Updated Jun 30, 2026 · NCT07464314

About Flu

The flu can cause serious illness in people over 65, babies, and people with certain chronic illnesses. The best way to prevent the flu is to get a vaccine.

More about Flu on MedlinePlus

Flu trials in other cities

Other studies in San Diego

From ClinicalTrials.gov, data retrieved Oct 5, 2026. Each study sets its own eligibility; the study team decides who can join.