Flu clinical trials in California
14 studies for Flu are looking for participants at sites in California.
Cities in California
A Study to Evaluate the Safety and Efficacy of MK-1406/CD388 for Prevention of Influenza (MK-1406-005/CD388.SQ.3.06)
- Profound Research LLC ( Site 0743), Carlsbad
- Triallogix Medical Corporation ( Site 0615), Fullerton
- Paradigm Clinical Research, LLC ( Site 0733), Modesto
- and 4 more
RecruitingPhase 3
Ages 12 and older · All sexes · Updated Nov 13, 2026 · NCT07159763A Study to Evaluate the Safety, Reactogenicity, and Immunogenicity of mRNA-1010 in Healthy Children
- Paradigm Clinical Research Centers, LLC, Modesto
RecruitingPhase 1Healthy volunteers welcome
Ages 9 to 17 · All sexes · Updated Nov 5, 2026 · NCT07870330A Trial to Evaluate the Effect of CD388/MK1406 on the Immunogenicity of Fluzone® HD Vaccine (CD388.SQ.1.08/MK-1406-007)
- Parexel ( Site 0001), Glendale
RecruitingPhase 1Healthy volunteers welcome
Ages 18 to 49 · All sexes · Updated Nov 4, 2026 · NCT07300085Efficacy 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 Oct 30, 2026 · NCT05624450High vs.Standard Dose Influenza Vaccine in Pediatric Solid Organ Transplant (SOT) Recipients
- Stanford University, Stanford
RecruitingPhase 2
Ages 3 to 17 · All sexes · Updated Oct 28, 2026 · NCT05947071A Study to Evaluate the Immune Response and Safety of a Vaccine Against Influenza in Adults 18-64 Years of Age
- GSK Investigational Site, San Diego
RecruitingPhase 3Healthy volunteers welcome
Ages 18 to 64 · All sexes · Updated Oct 9, 2026 · NCT07851246A 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 · NCT07779408Fluad 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 Nov 15, 2026. Each study sets its own eligibility; the study team decides who can join.