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Pfizer launches study to track symptoms of COVID-19 and flu in real time

NCT ID NCT05160636

Knowledge-focused Sponsor: Pfizer Source: ClinicalTrials.gov ↗

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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 26, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study follows about 1,000 adults in the U.S. who test positive for COVID-19 or influenza. Participants fill out surveys about their symptoms and quality of life over six months. The goal is to understand how these illnesses affect daily activities and whether COVID-19 vaccination changes the experience.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
COVID-19 Vaccine (Pfizer-BioNTech)
What this could lead to
If successful, this study could help researchers better understand how COVID-19 and flu affect daily life and whether vaccination reduces symptom severity.
What could go wrong
This is an observational survey study, not a controlled trial. Results may not prove cause and effect, and rely on self-reported data.

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 999 people

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

Started

Jan 2022

Expected to finish

Jan 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

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

Who is studied

Participants are 18 years or older who are self-reported symptomatic, who tested positive with RT-PCR at any of the approximately 5,000 CVSH COVID-test sites and consented to participate in the PRO study. Updated study analysis included participants 18 years or older who are self-reported symptomatic, with test-confirmed illness when tested at any of CVS pharmacy COVID-19 or influenza test sites, and consent to participate in the study.

Ages

18 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: * Age 18 or older * Self-reported at least one symptom in the CVS Health pre-test screening questionnaire * Positive result reported from diagnostic test for COVID-19 (or influenza in updated analysis) * Evidence of a signed and dated informed consent through electronic consent process indicating that the participant has been informed of all pertinent aspects of the study * Able to complete the questionnaires by themselves in English or Spanish Exclusion Criteria: \- No symptoms reported in the study screening questionnaire

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Conditions

The condition(s) this trial relates to.

COVID-19 influenza

As listed by the trial registrant

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

Coronavirus disease 2019 COVID -19 Influenza

Contacts and locations

Locations

  • Pfizer

    New York, New York, 10001, United States

More trials for these conditions

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