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Massive study tracks COVID-19 aftereffects for 18 months

NCT ID NCT04610515

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This completed study followed 6,000 adults who had COVID-19 symptoms and were tested for the virus. Participants completed online surveys every 3 months for 18 months to track long-term health issues like fatigue, brain fog, and heart problems. The goal was to better understand the lasting effects of COVID-19, not to test a treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

6,000 people

The number who actually took part.

Started

Dec 2020

Finished

Oct 2025

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Adults aged\>=18, with symptoms consistent with infection with SARS-COV2; test positive vs test negative individuals will be enrolled at a rate of 3:1.

Ages

18 years and older

Sex

Anyone

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

INCLUSION CRITERIA 1. Fluent in English or Spanish; 2. Age 18 and over; 3. Self-reported symptoms suggestive of acute SARSCOV2 infection; 4. Under investigation for SARSCOV2 (defined as a patient who has received any screening or diagnostic test used to detect the presence of COVID19 including any FDA approved or authorized molecular or antigen-based assay) within the last 42 days. EXCLUSION CRITERIA 1. Unable to provide informed consent; 2. Study team unable to confirm result of diagnostic test for SARSCOV2; 3. Does not have access to a hand-held device or computer that would allow for digital participation in the study; 4. Individuals who are prisoners while participating in the study.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Rush University Medical Center

    Chicago, Illinois, 60612, United States

  • Thomas Jefferson University

    Philadelphia, Pennsylvania, 19107, United States

  • UCLA

    Los Angeles, California, 90024, United States

  • UCSF

    San Francisco, California, 94110, United States

  • University of Texas Health Science Center at Houston

    Houston, Texas, 77030, United States

  • University of Texas Southwestern

    Dallas, Texas, 75390, United States

  • University of Washington

    Seattle, Washington, 98104, United States

  • Yale

    New Haven, Connecticut, 06510, United States

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