Toxoplasmosis seroprevalence in urban rodents: a survey in Niamey, Niger
Mem. Inst. Oswaldo Cruz
; 108(4): 399-407, jun. 2013. tab, graf
Article
em En
| LILACS
| ID: lil-678295
Biblioteca responsável:
BR1.1
ABSTRACT
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.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
LILACS
Assunto principal:
Doenças dos Roedores
/
Toxoplasma
/
Anticorpos Antiprotozoários
/
Toxoplasmose Animal
Tipo de estudo:
Diagnostic_studies
Limite:
Animals
/
Humans
/
Male
País/Região como assunto:
Africa
Idioma:
En
Revista:
Mem. Inst. Oswaldo Cruz
Assunto da revista:
MEDICINA TROPICAL
/
PARASITOLOGIA
Ano de publicação:
2013
Tipo de documento:
Article
País de afiliação:
França
País de publicação:
Brasil