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Bern police officers tested for COVID-19 immunity over one year

NCT ID NCT04643444

Knowledge-focused Sponsor: University of Bern 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 how many police officers in Bern, Switzerland had antibodies against COVID-19 over one year. About 1,024 officers volunteered to give blood samples at five different times. Researchers also asked about their work and home life to understand infection risks and how well protective gear worked.

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

1,024 people

The number who actually took part.

Started

Feb 2021

Finished

Jun 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.

Who is studied

Employees of the cantonal police of Bern, Switzerland

Ages

18 to 65 years

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: * Police officers of the cantonal police of Bern volunteering to participate in the study. Exclusion Criteria: * Refusal or inability to give informed consent or contraindication to venepuncture.

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Conditions

The condition(s) this trial relates to.

COVID-19

As listed by the trial registrant

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

Healthy SARS-CoV-2 infection Volunteers

Contacts and locations

Locations

  • University of Bern, Institute for Infectious Diseases

    Bern, Canton of Bern, 3010, Switzerland

More trials for these conditions

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