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Where does COVID hide after recovery? new study aims to find out

NCT ID NCT04448145

Knowledge-focused Sponsor: Columbia University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study follows about 800 people who have recovered from COVID-19 to learn how long the virus can stay in different parts of the body, such as the nose, stool, semen, and breast milk. Researchers will also track how the immune system responds and look for any long-term health problems. The goal is to better understand recovery and help doctors give better advice to patients.

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

About 800 people

The number the study aims to enrol. It can still change while the study runs.

Started

Mar 2020

Expected to finish

Sep 2026

An estimate. End dates often move.

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

All participants with RT-PCR positive for SARS-CoV-2 or diagnosed empirically based on known exposure and symptoms of fever, cough, and shortness of breath. Empirically diagnosed individuals who are negative at baseline by RT-PCR and serology Immunoglobulin M (IgM)/Immunoglobulin G (IgG) will be classified as uninfected and will not participate further, but may be replaced. Negative participants with no known prior COVID-19 diagnosis or COVID-19 vaccine.

Ages

7 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Laboratory confirmed SARS-CoV-2 using currently available laboratory testing techniques (e.g.,RT-PCR, Immunoglobulin M (IgM) /IgG) or clinical history compatible with a COVID-19 like illness(fever, cough, shortness of breath). * Negative participants with no known prior COVID-19 diagnosis or COVID vaccine * At least 7 years of age * Participants are eligible to provide semen and breast milk samples if they are 18 years of age or older Exclusion Criteria: * Age \<7 * Intercurrent conditions that in the opinion of the investigator would confound the findings of the study.

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Conditions

The condition(s) this trial relates to.

Coronavinae infectious disease COVID-19 Orthocoronavirinae infectious disease

As listed by the trial registrant

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

Corona virus infection COVID-19 SARS-CoV-2

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Columbia University Medical Center

    RECRUITING

    New York, New York, 10032, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.