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Understanding Immunity to the Flu Vaccine in COVID-19 Patients

Understanding Immunity to the Flu Vaccine in COVID-19 Patients

Recruiting
13-64 years
All
Phase N/A
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Overview

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 13 to 64) who had been diagnosed with COVID-19 as well as controls without COVID-19 will be invited to participate in this study.

Eligibility

Inclusion Criteria:

  • Age 13 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

Exclusion Criteria:

  • 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

Study details
    Corona Virus Infection
    Flu Vaccine
    Immunity

NCT04579588

Stanford University

1 November 2025

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FAQs

Learn more about clinical trials

What is a clinical trial?

A clinical trial is a study designed to test specific interventions or treatments' effectiveness and safety, paving the way for new, innovative healthcare solutions.

Why should I take part in a clinical trial?

Participating in a clinical trial provides early access to potentially effective treatments and directly contributes to the healthcare advancements that benefit us all.

How long does a clinical trial take place?

The duration of clinical trials varies. Some trials last weeks, some years, depending on the phase and intention of the trial.

Do I get compensated for taking part in clinical trials?

Compensation varies per trial. Some offer payment or reimbursement for time and travel, while others may not.

How safe are clinical trials?

Clinical trials follow strict ethical guidelines and protocols to safeguard participants' health. They are closely monitored and safety reviewed regularly.
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