Galal L., Fritz M., Becquart Pierre, Passebosc-Faure K., Plault N., Boundenga L., Mombo I. M., Kombila L. B., Mebaley T. N., Lenguiya L. H., Ngoubangoye B., N'Dilimabaka N., Prugnolle F., Forestier L., Gebremedhin E. Z., Leroy Eric, Maganga G. D., Mercier A. (2025). Toxoplasma gondii from Gabonese forest, Central Africa : First report of an African wild strain. PLoS Neglected Tropical Diseases, 19 (1), p. e0012214 [15 p.]. ISSN 1935-2735.
Titre du document
Toxoplasma gondii from Gabonese forest, Central Africa : First report of an African wild strain
Année de publication
2025
Auteurs
Galal L., Fritz M., Becquart Pierre, Passebosc-Faure K., Plault N., Boundenga L., Mombo I. M., Kombila L. B., Mebaley T. N., Lenguiya L. H., Ngoubangoye B., N'Dilimabaka N., Prugnolle F., Forestier L., Gebremedhin E. Z., Leroy Eric, Maganga G. D., Mercier A.
Source
PLoS Neglected Tropical Diseases, 2025,
19 (1), p. e0012214 [15 p.] ISSN 1935-2735
The protozoan Toxoplasma gondii is a ubiquitous and highly prevalent parasite that can theoretically infect all warm-blooded vertebrates. In humans, toxoplasmosis causes infections in both immunodeficient and immunocompetent patients, congenital toxoplasmosis, and ocular lesions. These manifestations have different degrees of severity. Clinical severity is determined by multiple factors, including the genotype of the T. gondii strain involved in the infection. T. gondii exhibits remarkable genetic diversity, which varies according to geography and ecotype (domestic or wild). Previous studies have demonstrated that wild strains of T. gondii are of particular epidemiological interest, as they have been associated with more severe forms of toxoplasmosis in different regions of the world. However, no data on wild strains of T. gondii are available from Africa. In this study, we describe for the first time a wild T. gondii strain from Africa. Wild animals from the forest environment of Gabon, Central Africa, were screened for chronic infection with T. gondii using quantitative PCR. The infecting T. gondii strains were genotyped whenever possible by the analysis of 15 microsatellite markers and by whole-genome sequencing. A new T. gondii genotype was identified in the DNA extract from a heart sample of a duiker (Cephalophus sp.) and was found to be highly divergent from previously described T. gondii populations worldwide, including those from domestic environments in Gabon. This discovery suggests the existence of a wild T. gondii population in Africa. The role of wild T. gondii strains in the incidence of severe toxoplasmosis in Africa remains unclear and requires further investigation.
Plan de classement
Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
GABON
Localisation
Fonds IRD [F B010092706]
Identifiant IRD
fdi:010092706
