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Can smarter surveillance sharpen pneumonia vaccines?

NCT ID NCT04447521

Knowledge-focused Sponsor: Sciensano 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 03, 2026 · Last updated Aug 04, 2026 · Updated 1 time

Summary

This study observes people in Belgium with non-invasive pneumococcal infections like pneumonia, ear infections, and sinusitis. Researchers will collect bacterial samples to see which strains are circulating and how they compare to invasive infections. The goal is to understand how well current vaccines are working and whether adjustments are needed.

What this could mean

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

What this could lead to
This surveillance could help refine vaccination programs to better protect against pneumonia, ear infections, and sinusitis.
What could go wrong
As an observational study, it won't test a new treatment. Findings may not directly change policy without further research.

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

1,404 people

The number who actually took part.

Started

Sep 2020

Finished

Dec 2025

Lead sponsor

A government agency

The lead sponsor is a government body.

Who can take part

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

Who is studied

Patients suffering from non-invasive pneumococcal disease (diagnosed as CAP, sinusitis and otitits media) and living in Belgium at the time of the study.

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

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: * Patients living in Belgium at the time of the study, * from whom unduplicated S. pneumoniae isolates were collected in routine practices, * from non-invasive upper (e.g.: pus/fluid from nasal sinus or from otitis media fluid) or lower respiratory tract (e.g. sputum bronchial or endotracheal aspirate, bronchoalveolar fluid (BAL),…) clinical samples, * from patients diagnosed with pneumonia, sinusitis and otitis. Exclusion Criteria: • Patients for whom S. pneumoniae was simultaneously isolated from blood or another usually sterile specimen

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Conditions

The condition(s) this trial relates to.

otitis media pneumonia

As listed by the trial registrant

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

Otitis media Pneumonia Sinusitis bacterial

Contacts and locations

Locations

  • Sciensano

    Brussels, 1180, Belgium

More trials for these conditions

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