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[West African tick-borne relapsing fever]
1Laboratoire de paludologie, Institut de Recherche pour le Développement, BP 1386, Dakar, Sénégal. lecompte.yan@sentoo.sn
Annales De Biologie Clinique
|December 16, 2003
Summary
West African tick-borne relapsing fever, caused by Borrelia crocidurae and transmitted by Alectorobius sonrai ticks, is a significant health concern in Sahelian regions. Diagnosis and treatment are crucial, especially for returning travelers, with tetracyclines as a primary therapy.
Area of Science:
- Medical Entomology
- Infectious Diseases
- Parasitology
Context:
- West African tick-borne relapsing fever is endemic, caused by Borrelia crocidurae.
- Alectorobius sonrai is the sole identified vector, with rodents and insectivores as potential reservoirs.
- Geographic distribution and epidemiological data, particularly in Senegal, are limited but indicate significant morbidity.
Purpose:
- To consolidate current knowledge on West African tick-borne relapsing fever.
- To highlight the role of Borrelia crocidurae and its vector Alectorobius sonrai.
- To emphasize diagnostic and therapeutic strategies and the importance of considering this disease in febrile patients from endemic areas.
Summary:
- Borrelia crocidurae causes relapsing fever in West Africa, transmitted by Alectorobius sonrai ticks.
- The disease, endemic to Sahelian regions, presents with relapsing febrile episodes and can have neurologic or ocular complications.
- Diagnosis involves identifying Borrelia in blood smears or via mouse inoculation/QBC tests; treatment includes tetracyclines, doxycycline, or erythromycin, with penicillin G or ceftriaxone for neurologic complications.
Impact:
- Highlights the public health importance of Borrelia crocidurae infections in West Africa.
- Underscores the need for increased awareness and systematic diagnosis in febrile patients returning from endemic zones.
- Informs clinical management and potential vector control strategies for tick-borne relapsing fever.