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Study tracks pneumococcal infections in adults to sharpen vaccine strategies

NCT ID NCT03983616

Knowledge-focused Sponsor: University Hospital, Limoges 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 completed study monitored 1560 adults hospitalized with invasive pneumococcal infections (excluding meningitis) across France. Researchers collected information on infection severity, risk factors, and bacterial serotypes to understand how these infections occur and how vaccines might be better targeted. The goal was to provide data that could guide future vaccination recommendations for adults.

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
If successful, this surveillance could help refine vaccine guidelines for adults against pneumococcal infections.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove that any vaccine works; it only gathers data to inform future recommendations.

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 1,560 people

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

Started

Apr 2014

Finished

Jun 2020

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

The study population consists of adults 18 years of age or older hospitalized for invasive pneumococcal disease in participating institutions.

Ages

18 years and older

Sex

Anyone

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: * 18 years old patients or older hospitalized with invasive pneumococcal infection confirmed by isolation of a strain from a usually sterile site: blood or pleural fluid Exclusion Criteria: * Pneumococcal meningitis identified by pneumococcal isolation or pneumococcal positive polymerase chain reaction (PCR) in cerebrospinal fluid

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Conditions

The condition(s) this trial relates to.

pneumococcal infection

As listed by the trial registrant

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

Pneumococcal infections

Contacts and locations

Locations

  • Service de Virologie

    Limoges, France

More trials for these conditions

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