PMID: 8600768Mar 1, 1996Paper

The spread of tick-borne borreliosis in West Africa and its relationship to sub-Saharan drought

The American Journal of Tropical Medicine and Hygiene
J F TrapeJ M Duplantier

Abstract

In West Africa, tick-borne relapsing fever is due to the spirochete Borrelia crocidurae and its geographic distribution is classically limited to the Sahel and Saharan regions where the vector tick Alectorobius sonrai is distributed. We report results of epidemiologic investigations carried out in the Sudan savanna of Senegal where the existence of the disease was unknown. A two-year prospective investigation of a rural community indicated that 10% of the study population developed an infection during the study period. Transmission patterns of B. crocidurae to humans and the small wild mammals who act as reservoirs for infection were similar to those previously described in the Sahel region. Examination of 1,197 burrows and blood samples from 2,531 small mammals indicated a considerable spread of the known area of distribution of A. sonrai and B. crocidurae. The actual spread of the vector and the disease has affected those regions where the average rainfall, before the start of the extended drought in West Africa, reached up to 1,000 mm and corresponds to the movement of the 750-mm isohyet toward the south from 1970 to 1992. Our findings suggest that the persistence of sub-Saharan drought, allowing the vector to colonize new a...Continue Reading

Citations

Jan 21, 2006·Emerging Infectious Diseases·Benjamin WyploszDaniele Postic
Jul 26, 2014·Emerging Infectious Diseases·Oleg MediannikovDidier Raoult
Jul 21, 2015·International Journal of Environmental Research and Public Health·Anna YusaRuth Waldick
Jan 5, 2011·Emerging Infectious Diseases·Eric M C EtterFrancois L Roger
Jan 16, 2016·PLoS Neglected Tropical Diseases·Cyrille Bilé EhounoudOleg Mediannikov
Jan 13, 2017·Malaria Journal·Mamadou A DialloDaouda Ndiaye
Sep 13, 2006·FEMS Immunology and Medical Microbiology·Stanislas Rebaudet, Philippe Parola
Nov 27, 2014·Journal of Vector Ecology : Journal of the Society for Vector Ecology·Yassine SouidiM'hammed Sarih
Mar 14, 2020·Pathogens·Handi DahmanaOleg Mediannikov
Apr 22, 1999·Environmental Health Perspectives·N Y ChanA E Smith
Mar 11, 2005·Emerging Infectious Diseases·Hamoud BrahimRonan Jambou
Dec 24, 2013·Vector Borne and Zoonotic Diseases·Oleg MediannikovDidier Raoult
Apr 28, 2010·Vector Borne and Zoonotic Diseases·Ali BouattourMuriel Cornet
Feb 4, 2006·Transactions of the Royal Society of Tropical Medicine and Hygiene·G TordiniG Zanelli
Mar 21, 2007·Emerging Infectious Diseases·Annika NordstrandSven Bergström
Jan 9, 2021·Annual Review of Entomology·Lucy Gilbert
Apr 23, 2021·PLoS Neglected Tropical Diseases·El Hadji Ibrahima NdiayeGeorges Diatta
Sep 18, 2021·Vector Borne and Zoonotic Diseases·Fatou Samba DioufGeorges Diatta

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