Long COVID Trial, Recruiting NCT04794829 Sponsor: National Institute of Allergy and Infectious Diseases (NIAID) Condition: Long COVID
Back to Long Covid

Long COVID Trial, Recruiting

NCT04794829
Recruiting Not Applicable

Who may be able to join

AI generated eligibility summary. Written by an AI model from the official source data and checked on a sample basis. It can contain mistakes, so confirm anything important against the original source. How we use AI

Who might be able to join this trial:

  • You are a staff member at the NIH (National Institutes of Health) at the time of joining the study
  • You are 18 years of age or older
  • You are able to understand and agree to participate in the study on your own
  • You are planning to get this year's flu vaccine and/or a COVID-19 vaccine that has been approved or authorized by the FDA
  • You are willing and able to have blood drawn (either at a clinic or at home using a home sampling kit) and to provide nasal samples
  • You are willing and able to have at least one blood draw and one nasal sample taken before receiving your vaccine

Who may not be able to join:

  • You have already received this year's flu vaccine and you do not plan to get an FDA-approved or authorized COVID-19 vaccine
  • You have already received an FDA-approved or authorized COVID-19 vaccine and you do not plan to get this year's flu vaccine
  • You are not willing to receive either this year's flu vaccine or an FDA-approved or authorized COVID-19 vaccine
  • You have any health condition that the study doctor believes would make it unsafe or unsuitable for you to participate (confirm with trial site)

Important: Always verify eligibility with the trial site directly before applying.

Based on publicly available eligibility criteria from ClinicalTrials.gov. Verify directly with the trial site before acting. This is not medical advice.

This is a simplified plain English summary of the eligibility criteria. Full criteria are set by the trial investigators and may include additional requirements not shown here. Never self-exclude from a trial based on this summary. Contact the trial site directly to confirm your eligibility.
Last synced 28 July 2026
This study is not part of the standard drug-approval phase pathway (for example an observational, device, behavioural, or registry study), so a phase success rate does not apply.

Contact this trial

Principal Investigator: Alison Han, M.D., National Institute of Allergy and Infectious Diseases (NIAID)

Phone: Not Listed

Contact details sourced from ClinicalTrials.gov. Verify directly with the trial site before attending.

GP referral letter

Print a one-page summary to share with your doctor.

Trial details

Status
Recruiting
Phase
Not Applicable
Registry
ClinicalTrials.gov
Start date
19 August 2021
Est. completion
31 December 2026

Where this trial is recruiting

🇺🇸 United States

Primary endpoints

Systemic anti-SARS-CoV-2 antibodies; Systemic anti-influenza antibodies

Can't join this trial?

Expanded access pathways

If this trial is not available to you, other access pathways may exist. In Australia, the TGA Special Access Scheme allows access to unapproved therapeutic goods for individual patients.

TGA Special Access Scheme information

Find other recruiting trials on ClinicalTrials.gov

Data last synced from ClinicalTrials.gov: 28 July 2026. Trial status can change. Always verify current status directly with the trial site before making any decision.

Trial recruitment status can change without notice between our nightly data updates. Always contact the trial site directly to confirm current recruitment status before making any decisions or travel arrangements.

View original record on ClinicalTrials.gov