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Search / Trial NCT04579588

Understanding Immunity to the Flu Vaccine in COVID-19 Patients

Launched by STANFORD UNIVERSITY · Oct 6, 2020

Trial Information

Current as of June 26, 2025

Recruiting

Keywords

ClinConnect Summary

This clinical trial is studying how well people who have had COVID-19 respond to the flu vaccine over time. Researchers want to understand if having COVID-19 affects your immunity to the flu after getting vaccinated. They are looking for adults aged 18 to 75, including those diagnosed with mild to severe COVID-19 at least two months before joining the study, as well as healthy adults who have not had COVID-19.

If you join the trial, you will be asked to provide some information and may have blood tests to measure your immune response to the flu vaccine. It’s important to note that you cannot participate if you received the flu vaccine in the last four months, are pregnant or breastfeeding, or have certain health conditions that could complicate the study. This research aims to improve our understanding of how COVID-19 affects flu immunity, which could help in developing better vaccination strategies in the future.

Gender

ALL

Eligibility criteria

  • 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
  • Immunodeficiency or autoimmune disease

About Stanford University

Stanford University is a prestigious academic institution renowned for its cutting-edge research and innovation in healthcare and medicine. As a clinical trial sponsor, Stanford leverages its extensive resources, including a collaborative network of world-class researchers and state-of-the-art facilities, to advance medical knowledge and improve patient care. The university is committed to conducting rigorous, ethical research that adheres to the highest standards of scientific integrity, fostering an environment where groundbreaking discoveries can translate into effective clinical applications. Through its clinical trials, Stanford aims to address critical health challenges and contribute to the development of novel therapies and treatment strategies.

Locations

Palo Alto, California, United States

Stanford, California, United States

Patients applied

0 patients applied

Trial Officials

Sayantani Sindher, MD

Principal Investigator

Stanford University

Timeline

First submit

Trial launched

Trial updated

Estimated completion

Not reported

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