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

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

25 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-02-19

Study Completion Date

2026-10-19

Brief Summary

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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.

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Detailed Description

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Conditions

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Borrelia Recurrentis Infection

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

RETROSPECTIVE

Eligibility Criteria

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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