Flu clinical trials in California
10 studies for Flu are looking for participants at sites in California.
Cities in California
High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients
- Stanford University, Stanford
RecruitingPhase 2
Ages 3 to 17 · All sexes · Updated Sep 24, 2026 · NCT05947071A Study on the Efficacy of a Vaccine Against Influenza in Adults ≥65 Years of Age
- GSK Investigational Site, Dublin
- GSK Investigational Site, Escondido
- GSK Investigational Site, Fair Oaks
- and 7 more
RecruitingPhase 3Healthy volunteers welcome
Ages 65 and older · All sexes · Updated Sep 18, 2026 · NCT07805707Study 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.
- Peninsula Research Associates- Site Number : 8400011, Rolling Hills Estates
- California Research Foundation- Site Number : 8400007, San Diego
RecruitingPhase 1/2Healthy volunteers welcome
Ages 18 and older · All sexes · Updated Sep 15, 2026 · NCT07779408Efficacy and Safety of Tozorakimab in Patients Hospitalised for Viral Lung Infection Requiring Supplemental Oxygen
- Research Site, Fresno
- Research Site, Newport Beach
- Research Site, Torrance
RecruitingPhase 3
Ages 18 and older · All sexes · Updated Aug 28, 2026 · NCT05624450Fluad vs. Fluzone High-Dose Vaccine Effectiveness Among Adults ≥65 Years
- Kaiser Permanente Northern California (entire region), Oakland
RecruitingObservational studyHealthy volunteers welcome
Ages 65 and older · All sexes · Updated Aug 5, 2026 · NCT06029933The Effects of Endotracheal Suctioning on Pain and Serum Markers
- Loma Linda University Medical Center Troesh Medical Campus, Loma Linda
Recruiting
Ages 18 and older · All sexes · Updated Jul 10, 2026 · NCT06692400A Study on the Safety and Immune Response of Investigational mRNA Seasonal Flu/COVID-19 Combination Vaccine in Adults
- GSK Investigational Site, Fair Oaks
- GSK Investigational Site, San Diego
RecruitingPhase 1
Ages 65 to 85 · All sexes · Updated Jun 30, 2026 · NCT07464314A Study to Learn About mRNA Vaccines Against Influenza in Adults
- Diablo Clinical Research, LLC d/b/a Flourish Research, Walnut Creek
RecruitingPhase 2Healthy volunteers welcome
Ages 18 and older · All sexes · Updated May 6, 2026 · NCT07431853Understanding Immunity to the Flu Vaccine in COVID-19 Patients
- Stanford University, Palo Alto
RecruitingObservational studyHealthy volunteers welcome
Ages 9 to 64 · All sexes · Updated Mar 18, 2026 · NCT04579588Immune Defense Protein Impact On Respiratory Immune Outcomes
- People Science, Inc., Los Angeles
RecruitingHealthy volunteers welcome
Ages 60 and older · All sexes · Updated Mar 12, 2026 · NCT07431840From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.