# Understanding Immunity to the Flu Vaccine in COVID-19 Patients

> **NCT04579588** · — · RECRUITING · sponsor: **Stanford University** · enrollment: 230 (estimated)

## Conditions studied

- Corona Virus Infection
- Flu Vaccine
- Immunity

## Interventions

- **BIOLOGICAL:** Flu shot

## Key facts

- **NCT ID:** NCT04579588
- **Lead sponsor:** Stanford University
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2020-10-29
- **Primary completion:** 2028-04
- **Final completion:** 2028-04
- **Target enrollment:** 230 (ESTIMATED)
- **Last updated:** 2026-03-18

## Collaborators

- [object Object]

## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04579588

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04579588, "Understanding Immunity to the Flu Vaccine in COVID-19 Patients". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04579588. Licensed CC0.

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