Understanding Immunity to the Flu Vaccine in COVID-19 Patients

Recruiting now

Conditions studied: Corona Virus Infection, Flu Vaccine, Immunity

In brief

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.

Key facts

Study ID

NCT04579588

Run by

Stanford University

People needed

230

Starts

2020-10-29

Expected to finish

2028-04-01

Last updated by the study team

2026-03-18

Who can join

Age: 9 and older, up to 64. Sex: any. Healthy volunteers: accepted.

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 is running

• Stanford University — Palo Alto, California, United States (enrolling)

Full record on ClinicalTrials.gov

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