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Global hunt launched to unravel hidden dangers of rat urine disease

NCT ID NCT04288674

Knowledge-focused Sponsor: University of Cologne Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 creates a global registry to collect information from 200 people with leptospirosis, a bacterial infection caught from animals or contaminated water. Researchers will track how the disease spreads, what treatments work, and why some patients get very sick. No new treatments are tested; the goal is to better understand the disease to improve future care.

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 200 people

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

Started

Mar 2020

Expected to finish

Dec 2030

An estimate. End dates often move.

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

Retrospective data collection from patients with cultural, serological, molecular or histological evidence of Leptospirosis spp. infection and clinical evidence of invasive leptospirosis disease (acute kidney injury, pulmonary manifestation with acute respiratory distress syndrome (ARDS), myocarditis with arrhythmia, hepatic dysfunction, hemorrhage, multi-organ failure). Particularly, controls will be included at the same hospitals that conduced cases based on matching of demographics, underlying diseases and duration of hospitalization (i.e. one control per case, both in the same hospital).

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: * Cultural, serological, molecular or histological evidence of invasive leptospirosis diseases * Clinical signs of disseminated leptospirosis disease without cultural, serological, molecular or histological evidence * Case controls: Matching procedures for controls: Particularly, case controls will be included at the same hospitals that conduced cases based on matching of demographics, underlying diseases and duration of hospitalization (i.e. one control per case, both in the same hospital). Exclusion Criteria: * Colonization or other non-invasive infection * Cultural, serological, molecular or histological evidence without dissemination

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Conditions

The condition(s) this trial relates to.

leptospirosis

As listed by the trial registrant

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

Leptospirosis

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • University Hospital of Cologne

    RECRUITING

    Cologne, North Rhine-Westphalia, 50937, Germany

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