Mycobacterium africanum is associated with patient ethnicity in Ghana

Asante-Poku, Adwoa and Yeboah-Manu, Dorothy and Otchere, Isaac Darko and Aboagye, Samuel Y. and Stucki, David and Hattendorf, Jan and Borrell, Sonia and Feldmann, Julia and Danso, Emelia and Gagneux, Sebastien. (2015) Mycobacterium africanum is associated with patient ethnicity in Ghana. PLoS neglected tropical diseases, Vol. 9, H. 1, e3370.

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Official URL: http://edoc.unibas.ch/dok/A6337857

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Mycobacterium africanum is a member of the Mycobacterium tuberculosis complex (MTBC) and an important cause of human tuberculosis in West Africa that is rarely observed elsewhere. Here we genotyped 613 MTBC clinical isolates from Ghana, and searched for associations between the different phylogenetic lineages of MTBC and patient variables. We found that 17.1% (105/613) of the MTBC isolates belonged to M. africanum, with the remaining belonging to M. tuberculosis sensu stricto. No M. bovis was identified in this sample. M. africanum was significantly more common in tuberculosis patients belonging to the Ewe ethnic group (adjusted odds ratio: 3.02; 95% confidence interval: 1.67-5.47, p>0.001). Stratifying our analysis by the two phylogenetic lineages of M. africanum (i.e. MTBC Lineages 5 and 6) revealed that this association was mainly driven by Lineage 5 (also known as M. africanum West Africa 1). Our findings suggest interactions between the genetic diversity of MTBC and human diversity, and offer a possible explanation for the geographical restriction of M. africanum to parts of West Africa.
Faculties and Departments:09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH) > Department of Medical Parasitology and Infection Biology (MPI) > Tuberculosis Ecology and Evolution Unit (Gagneux)
09 Associated Institutions > Swiss Tropical and Public Health Institute (Swiss TPH)
UniBasel Contributors:Hattendorf, Jan and Borrell, Sonia and Gagneux, Sebastien and Stucki, David Paul
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Public Library of Science
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:31 Dec 2015 10:57
Deposited On:06 Feb 2015 09:59

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