Study of the Clinical, Microbiological and Epidemiological Characteristics of Recurrent Imported Borreliosis Confirmed by the CNR Borrelia (BORRECUR)

January 2, 2026 updated by: University Hospital, Strasbourg, France

Study of the Clinical, Microbiological, and Epidemiological Characteristics of Recurrent Imported Borreliosis Confirmed by the Borrelia National Reference Center

Recurrent borreliosis (RB) is a bacterial infection transmitted by ticks or lice. These infections occur in both temperate and tropical regions, but are rare in Australia and Antarctica. Due to climate change, the areas inhabited by the vectors of these infections are shifting, and the number of at-risk regions has significantly increased in recent years. More than twenty RB species have been described, responsible for variable clinical manifestations including fever, myalgia, digestive disorders, and sometimes neurological symptoms. Tick-borne RB represents a major public health problem, particularly in Africa. Mortality from these infections ranges from 5% to 10%. In recent years, diagnostic techniques have evolved. Microscopic diagnosis was initially the gold standard but had only moderate sensitivity and exhibited inter-operator variability. The advent of molecular biology now allows for increased sensitivity with excellent specificity and also enables the identification of the causative species.

A few cases have been described in France, consisting mainly of case reports. Therefore, this study will provide a comparative description, within a series, of cases diagnosed in France: symptoms, patients' countries of origin, Borrelia species, diagnostic techniques, management, and patient outcomes.

Study Overview

Status

Recruiting

Conditions

Study Type

Observational

Enrollment (Estimated)

25

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Locations

  • France
      • Strasbourg, France, 67091
        • Recruiting
        • Laboratoire de Bactériologie - CHU de Strasbourg - France
        • Contact:
        • Principal Investigator:
          • Émilie TALAGRAND-REBOUL, MD

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

  • Child
  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Minor or adult subject having presented (from January 1, 2013, to January 1, 2025) with recurrent imported borreliosis, the diagnosis of which was confirmed by the CNR Borrelia in Strasbourg

Description

Inclusion Criteria:

  • Minor or adult subject
  • Having presented (from January 1, 2013, to January 1, 2025) with recurrent imported borreliosis, the diagnosis of which was confirmed by the CNR Borrelia in Strasbourg

Exclusion Criteria:

- Refusal to participate in the study

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Clinical and biological description of cases of recurrent imported borreliosis
Time Frame: Up to 12 years
This study does not include any evaluation, but simply describes cases diagnosed in France: symptoms, patients' countries of origin, Borrelia species, diagnostic techniques, and treatment.
Up to 12 years

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

University Hospital, Strasbourg, France

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

February 19, 2025

Primary Completion (Estimated)

October 1, 2026

Study Completion (Estimated)

October 19, 2026

Study Registration Dates

First Submitted

January 2, 2026

First Submitted That Met QC Criteria

January 2, 2026

First Posted (Actual)

January 13, 2026

Study Record Updates

Last Update Posted (Actual)

January 13, 2026

Last Update Submitted That Met QC Criteria

January 2, 2026

Last Verified

January 1, 2026

More Information

Terms related to this study

Keywords

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 9541

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Borrelia Recurrentis Infection

Search Similar Trials

Sponsors and Collaborators

Medical Conditions

Drug Interventions

CROs by country

CROs in Panama

Conditions

Rare Diseases

Drug Interventions

Dietary Supplements

Sponsor/Collaborators

Locations

Subscribe