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Olomouc study reveals how many have COVID antibodies

NCT ID NCT07387211

Knowledge-focused Sponsor: The Institute of Molecular and Translational Medicine, Czech Republic 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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 study looked at nearly 2,500 adults in the Olomouc region to find out how many had antibodies or cellular immunity against the SARS-CoV-2 virus, either from a past infection or from vaccination. Participants gave blood samples and answered a questionnaire. The goal was to understand the level of protection in the community, not to test a new 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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

2,484 people

The number who actually took part.

Started

Jan 2022

Finished

Oct 2022

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.

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

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: * Participation in the SARS-CoV-2-CZ-PREVAL study and venous blood examined as part of this study * Signed study informed consent and consent to the processing of personal data * Adults (age 18 and over) * Willingness to complete the questionnaire Exclusion Criteria: • Participant with acute health problems

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Conditions

The condition(s) this trial relates to.

COVID-19 Infections

As listed by the trial registrant

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

SARS-CoV-2 SARS-CoV-2 (COVID-19) infection

Contacts and locations

Locations

  • University Hospital Olomouc

    Olomouc, 77900, Czechia

More trials for these conditions

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