Actively Recruiting
Understanding Immunity to the Flu Vaccine in COVID-19 Patients
Led by Stanford University · Updated on 2026-03-18
230
Participants Needed
1
Research Sites
387 weeks
Total Duration
On this page
Sponsors
S
Stanford University
Lead Sponsor
N
National Institute of Allergy and Infectious Diseases (NIAID)
Collaborating Sponsor
AI-Summary
What this Trial Is About
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.
CONDITIONS
Official Title
Understanding Immunity to the Flu Vaccine in COVID-19 Patients
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Age 9 through 64 years
- Diagnosed with COVID-19 at least 2 months prior to enrollment
- Patients with or without obesity, diabetes, chronic fatigue, and/or long-term COVID-19 symptoms
- Patients without COVID-19 diagnosis for control group
You will not qualify if you...
- Received the influenza vaccine less than 4 months ago
- Pregnant or lactating
- Patients with special risks related to venipuncture
- Use of immunomodulatory medications that may affect vaccine immune response as judged by clinician
- Contraindication to the flu vaccine
- Immunodeficiency or autoimmune disease that may affect vaccine immune response as judged by clinician
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Trial Site Locations
Total: 1 location
1
Stanford University
Palo Alto, California, United States, 94304
Actively Recruiting
Research Team
S
SNP Center Inquiry
CONTACT
How is the study designed?
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
2
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