Horizon 1 1 17 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES Memorias do Instituto Oswaldo Cruz 399-407 Toxoplasma gondii epidemiology zoonotic disease Africa Sahel NIGER SAHEL 2013 fdi:010060500 ENG Memorias do Instituto Oswaldo Cruz 0074-0276 ISI:000321392900002 4 10.1590/0074-0276108042013002 https://www.documentation.ird.fr/hor/fdi:010060500 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers19-10/010060500.pdf 108 Horizon (IRD) A serological survey of Toxoplasma gondii was conducted on 766 domestic and peridomestic rodents from 46 trapping sites throughout the city of Niamey, Niger. A low seroprevalence was found over the whole town with only 1.96% of the rodents found seropositive. However, differences between species were important, ranging from less than 2% in truly commensal Mastomys natalensis, Rattus rattus and Mus musculus, while garden-associated Arvicanthis niloticus displayed 9.1% of seropositive individuals. This is in line with previous studies on tropical rodents - that we reviewed here - which altogether show that Toxoplasma seroprevalence in rodent is highly variable, depending on many factors such as locality and/or species. Moreover, although we were not able to decipher statistically between habitat or species effect, such a contrast between Nile grass rats and the other rodent species points towards a potentially important role of environmental toxoplasmic infection. This would deserve to be further scrutinised since intra-city irrigated cultures are extending in Niamey, thus potentially increasing Toxoplasma circulation in this yet semi-arid region. As far as we are aware of, our study is one of the rare surveys of its kind performed in Sub-Saharan Africa and the first one ever conducted in the Sahel. 052 ; 080 UR022 Niger