Seroprevalence of Toxoplasma gondii infection in sheep and alpacas (Llama pacos) in Chile.
Prev Vet Med
; 40(3-4): 143-9, 1999 Jun 11.
Article
en En
| MEDLINE
| ID: mdl-10423770
Serum samples from 408 sheep from different regions of Chile and 447 alpacas (Llama pacos) from the north of the country were tested for Toxoplasma gondii antibodies. The indirect haemagglutination test (IHAT) was used in both species and the indirect immunofluorescence test (IIFT) was also used on the sheep samples in order to compare the performance of the tests in that species. In both tests, titers > or = 1:16 were considered diagnostically significant. Sera from 49 sheep (12%) were positive to T. gondii antibodies by the IHAT. When using the IIFT, 114 sheep sera (28%) were positive. The different results obtained in sheep sera between the tests were significant (p < 0.0001). No differences were observed between geographical locations or sex of the sampled sheep regarding serological detection of T. gondii antibodies in sheep. As expected, adult sheep showed higher T. gondii reactivity than young sheep (p = 0.0008). The corrected prevalence of toxoplasmosis in alpaca was 16.3% (32 positive out of 447). The rather low prevalence in alpacas may be associated with their extensive management as well as the extreme climatic conditions of The Andes which apparently would not be favorable for the transmission of the parasite.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Enfermedades de las Ovejas
/
Toxoplasma
/
Camélidos del Nuevo Mundo
/
Ovinos
/
Toxoplasmosis Animal
Tipo de estudio:
Diagnostic_studies
/
Risk_factors_studies
Límite:
Animals
País/Región como asunto:
America do sul
/
Chile
Idioma:
En
Revista:
Prev Vet Med
Año:
1999
Tipo del documento:
Article
País de afiliación:
Chile
Pais de publicación:
Países Bajos