Clinical trials
Influenza clinical trials
Below are recruiting influenza clinical trials, each written for real people, not researchers. We’re tracking 116 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06824519RecruitingPhase 1/Phase 2
Quadrivalent flu vaccine trial for adults
This trial tests a new quadrivalent influenza (flu) vaccine in adults 18 and older. It aims to see if the vaccine is safe and helps protect against the flu. You may be able to join if you are generally healthy and have not had the flu or a flu shot recently.
Shijiazhuang, HebeiAges 18 years+ - NCT07838298RecruitingPhase 4
Flu vaccine response in older adults who get it yearly
This study checks how well the seasonal flu vaccine works in people 65 and older who have had flu shots regularly. It compares their immune response to that of younger adults to see if repeated vaccination still protects them.
SeoulAges 19 years+ - NCT07485855RecruitingPhase 3
Flu vaccine study for blood cancer patients
This trial tests how well the flu vaccine works in people with blood cancers like lymphoma, leukemia, or multiple myeloma. It aims to find the best vaccination strategy to protect you during treatment.
SeoulAges 19 years+ - NCT07192458RecruitingPhase 2
High vs. Standard Dose Flu Vaccine in Lung Transplant
This study compares a high-dose flu vaccine to the standard dose in lung transplant recipients. It aims to see if a higher dose gives better protection against the flu.
Nashville, TennesseeAges 18 years+ - NCT07721649Recruiting
Flu shot during hospital stay for heart patients
This study checks if giving a flu shot to heart patients while they are in the hospital helps prevent heart problems later. It tests whether the flu shot can reduce the risk of further heart events.
CologneAges 18 years+ - NCT07302256RecruitingPhase 1
Flu vaccine trial for adults 60 and older
This trial tests an influenza (flu) vaccine in people aged 60 and above. It aims to see if the vaccine is safe and works well for older adults, who are at higher risk for flu complications.
Wuhan, HubeiAges 60 years+ - NCT07203755RecruitingPhase 1
Combination vaccine for whooping cough, Hib, and meningitis
This trial tests a new combination vaccine that protects against whooping cough, Haemophilus influenzae type b (a cause of meningitis and pneumonia), and several types of meningococcal disease (a cause of meningitis and bloodstream infections). It may help reduce the number of shots needed for children.
Shangqiu, HenanAges 2 months–6 years - NCT06842173RecruitingPhase 1/Phase 2
Safety testing of new bird flu vaccine (H5N8) in adults
This trial tests a new bird flu (H5N8) vaccine for adults aged 18 and older. It looks at how safe the vaccine is and how well it triggers an immune response. The vaccine is given as a shot and includes an adjuvant to boost protection.
Belo Horizonte, Minas GeraisAges 18 years+ - 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 - NCT05832307Recruiting
Testing whether inpatient flu shots improve vaccination rates
This trial looks at an organized plan to give flu vaccines during hospital stays. It may help more inpatients get protected against influenza before they leave the hospital.
Chicago, IllinoisAges 6 months–99 years - NCT07215871Enrolling by invitationPhase 1
Second H10N7 flu challenge for prior participants
This study tests whether people who have already been exposed to a lab-made H10N7 flu virus can be safely exposed again. It checks how their immune system responds and how long they shed the virus, in a controlled, isolated setting.
Bethesda, MarylandAges 18–55 - NCT07861854Recruiting
How young children fight flu: a nose and blood study
This study looks at how children's bodies protect against flu by checking their nose and blood. It aims to find better ways to prevent flu in young kids.
Jouberton, North WestAges 2–5 - NCT02735707RecruitingPhase 3
Adaptive trial for severe pneumonia care in intensive care
This study tests ways to improve treatment for adults with severe pneumonia that lands them in the ICU, adjusting the plan as results come in. It may help your care team find better treatments for lung infection and breathing/heart support needs.
Jacksonville, FloridaAges 18 years+ - 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.
Anniston, AlabamaAges 65 years+ - NCT06573008RecruitingPhase 3
Testing GP681 Tablets for Flu in High-Risk Patients
This study tests an oral tablet called GP681 for people with flu who are at higher risk of serious complications. It compares the new drug to a placebo to see if it helps reduce symptoms faster.
ChizhouAges 12 years+ - NCT07310472Recruiting
Nasal flu vaccine for children in daycare
This trial is testing a nasal spray flu vaccine given to children at their daycare or a healthcare facility. It aims to make getting the vaccine easier and more convenient for families.
TurkuAges 2–6 - NCT07305207RecruitingPhase 1
Influenza H3N2 infection study for pandemic preparedness
This study gives healthy adults a controlled dose of influenza H3N2 virus to learn how the body responds. The goal is to build a model that can help develop better vaccines and treatments for future flu pandemics.
Halifax, Nova ScotiaAges 18–45 - NCT07240558RecruitingPhase 3
Flu vaccine study for organ transplant patients
This study tests whether a special flu vaccine, designed for a future pandemic, works safely in people who have had an organ transplant. It aims to find a better way to protect transplant patients from severe flu.
Toronto, OntarioAges 18 years+ - NCT07177417RecruitingPhase 4
How the immune system responds to FluMist in the airways
This study tests how the immune system in your nose and airways responds to the FluMist nasal spray flu vaccine. It may help doctors understand why some people get better protection from the flu.
St Louis, MissouriAges 18–40 - NCT07111078RecruitingPhase 1
New Flu Vaccine (Stem) with or without Booster
This trial tests a new type of flu vaccine that targets a part of the virus that doesn't change much (the stem). It is given with or without a special booster, and researchers want to see if it provides broader protection against different flu strains.
Bethesda, MarylandAges 18–50 - NCT06863142RecruitingPhase 1
Testing a new flu vaccine with or without adjuvant
This study tests a new investigational flu vaccine (FluMos-v2) with or without an adjuvant (ALFQ) to see how safe, tolerable, and effective it is. It may help protect against multiple flu strains.
Bethesda, MarylandAges 18–50 - NCT06753474RecruitingPhase 1
Flu challenge study for healthy adults
This study tests how healthy adults respond to being exposed to a flu virus in a controlled setting. You will be closely monitored and may help researchers learn more about flu and potential treatments.
Atlanta, GeorgiaAges 18–49 - NCT06684379RecruitingPhase 1/Phase 2
Two Doses of PRS CK STORM for Severe Viral Pneumonia
This study tests a new drug called PRS CK STORM to see if it can safely calm the body's overactive immune response (cytokine storm) in people with severe pneumonia from COVID-19, flu, or RSV who need oxygen. It aims to reduce inflammation and improve recovery.
Alcalá de Henares, MadridAges 18 years+ - NCT06653569RecruitingPhase 3
Baloxavir for flu in hospitalized adults
This trial tests if the antiviral drug baloxavir can help adults hospitalized with influenza recover faster. It compares baloxavir to a placebo to see if it improves symptoms and outcomes.
Geneva, Canton of GenevaAges 18 years+
Hear when a new Influenza trial opens
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Influenza trials by city
Studies with a site in or near these metro areas.
Influenza trials by state
Studies with a site anywhere in these states.
Common questions
- Are there clinical trials for influenza?
- Yes. Clin2 currently lists 116 recruiting influenza studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a influenza trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a influenza trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
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.