RecruitingCorona Virus InfectionFlu VaccineImmunity
Understanding Immunity to the Flu Vaccine in COVID-19 Patients
Eligible age
9–64 yrs
Accepts
All genders
Locations
1 state
Healthy volunteers
Yes
See if you qualify for this study
Answer a few quick questions about your location and health. Takes about a minute.
About this study
The purpose of this study is to measure immunity to the flu vaccine over time in patients who have had COVID-19 and may have other medical conditions including obesity, type 2 diabetes, chronic fatigue, or long-term COVID-19 symptoms. Adults and children (age 9 to 64) who had been diagnosed with COVID-19 as well as controls without COVID-19 will be invited to participate in this study.
Sponsor: Stanford University
You may qualify if…
- ✓ Age 9 through 64 years
- ✓ Diagnosed with COVID-19 at least 2 months prior enrollment
- ✓ Patients with or without obesity, diabetes, chronic fatigue and/or long term COVID-19 symptoms
- ✓ Patients without COVID-19 diagnosis for controls
You may not qualify if…
- ✕ Received the influenza vaccine less than 4 months ago
- ✕ Pregnant or lactating
- ✕ Patients with special risks attendant to venipuncture
- ✕ Use of immunomodulatory medications that may impact vaccine immune response per clinician's judgment
- ✕ Contraindication to the flu vaccine
- ✕ Immunodeficiency or autoimmune disease that may impact vaccine immune responses per clinician's judgement
Where it's recruiting
California
Palo Alto
Source: ClinicalTrials.gov · NCT04579588 · last updated 2026-03-18