Clinical trials · California
Influenza clinical trials in California
We’re tracking 10 recruiting influenza studies with a site in California — including Phase 1, Phase 1/Phase 2, Phase 2 and Phase 3 studies, each written for real people, not researchers.
Recruiting studies in California
- NCT05947071RecruitingPhase 2
Higher-dose flu vaccine versus standard dose in child transplant patients
This trial compares a higher-dose flu vaccine to the standard dose in children who recently received a kidney, heart, and/or liver transplant. It aims to see which dose better protects children against influenza while checking for safety.
Stanford, CaliforniaAges 3–17 - NCT07805707RecruitingPhase 3
Flu vaccine study for adults 65 and older
This study tests a new flu vaccine in adults aged 65 and older to see how well it prevents the flu. If you are generally healthy or manage chronic conditions well, you may be able to join.
San Diego, CaliforniaAges 65 years+ - NCT06029933Recruiting
Comparing two flu vaccines for older adults
This study compares two types of flu shots for people 65 and older to see which works better. If you are a Kaiser Permanente member and get your flu shot at a Kaiser facility, this trial looks at your health records to see how well the vaccine protected you.
Oakland, CaliforniaAges 65 years+ - NCT07159763RecruitingPhase 3
Study of a new medicine to prevent flu
This study tests a new type of flu prevention medicine (called a monoclonal antibody) given as an injection. It is for people at higher risk of getting the flu, including those with certain health conditions or weakened immune systems.
Fullerton, CaliforniaAges 12 years+ - NCT07851246RecruitingPhase 3
Flu vaccine study for adults 18 to 64
This study tests a new flu vaccine to see how well it protects adults aged 18 to 64. If you join, you'll get the vaccine and have some check-ups to see how your body responds.
San Diego, CaliforniaAges 18–64 - NCT07779408RecruitingPhase 1/Phase 2
H5N8 flu vaccine study for healthy adults
This study tests an experimental flu vaccine designed to protect against the H5N8 bird flu virus. It is given with an ingredient that may boost the immune response. The study will check if the vaccine is safe and how well it triggers the body's defenses.
Rolling Hills Estates, CaliforniaAges 18 years+ - NCT07464314RecruitingPhase 1
Testing a combined flu and COVID-19 mRNA vaccine in older adults
This trial is testing whether a new mRNA vaccine that targets both seasonal flu and COVID-19 is safe and creates a strong immune response. It may offer an easier way to protect against two illnesses with one shot.
Fair Oaks, CaliforniaAges 65–85 - NCT07431840Recruiting
Immune protein for respiratory infections in older adults
This trial tests whether an immune defense protein can help reduce upper respiratory infections (like colds) in people aged 60 and older. It may be a good fit if you get colds or flu-like symptoms several times each season.
Los Angeles, CaliforniaAges 60 years+ - NCT07431853RecruitingPhase 2
Study of an mRNA flu vaccine for adults
This trial is testing a new mRNA-based flu vaccine in healthy adults. It aims to see if the vaccine is safe and effective at preventing influenza.
Walnut Creek, CaliforniaAges 18 years+ - NCT06692400Recruiting
Suctioning, pain, and blood markers in intubated patients
This study looks at how routine suctioning of the breathing tube affects pain levels and certain substances in the blood in adults who are on a breathing machine for serious infections like flu, pneumonia, COVID, or sepsis. It may help doctors better understand and manage your comfort during this procedure.
Loma Linda, CaliforniaAges 18 years+
Influenza trials by city in California
Where these studies are running in California
Institutions with a site for the recruiting influenza studies listed above.
- GSK Investigational Site · 3 studies
- Acclaim Clinical Research ( Site 0506)
- Artemis Institute for Clinical Research ( Site 0617)
- California Research Foundation- Site Number : 8400007
- Diablo Clinical Research, Inc. ( Site 0572)
- Diablo Clinical Research, LLC d/b/a Flourish Research
- Eximia Clinical Research ( Site 0571)
- Kaiser Permanente Northern California (entire region)
What taking part in a influenza study involves
A screening visit first
Before anything else, the study team checks whether you fit — usually a visit with some tests. You can stop at any point, and screening is typically free.
Care at a nearby site
Study visits happen at a clinic or hospital taking part. Many studies cover the cost of the study treatment and related visits, and some reimburse travel.
You stay in control
Taking part is voluntary and you can leave a study at any time, for any reason, without affecting your regular care.
The team decides eligibility
Our fit check is a helpful first read, not a decision. The study team makes the final call after reviewing your health history.
Influenza trials in other states
Common questions
- Are there influenza clinical trials in California?
- Yes. We're currently tracking 10 recruiting influenza studies with a site in California, each rewritten in plain language so you can see what it's testing and who it's for.
- How do I find out if I qualify for a influenza study in California?
- Each study lists its eligibility rules — age, diagnosis, prior treatments. On every trial page we explain these in plain language and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Do I have to live in California to take part?
- Not necessarily. These studies have a site in California, but eligibility is about your health, not your address — some people travel to take part, and a few studies reimburse travel. The study team can tell you what's required.
- Does it cost anything to join a influenza trial?
- Using Clin2 is always free. Many trials cover the study treatment and related visits; some reimburse travel. The study team explains exactly what's covered before you decide.
Not the right time?
New influenza studies open in California regularly. Set up a health profile and we’ll quietly watch for studies that fit you and email you when one opens.
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.