Significance of Neospora caninum in British dairy cattle determined by estimation of seroprevalence in normally calving cattle and aborting cattle.
Int J Parasitol
; 29(8): 1189-94, 1999 Aug.
Article
en En
| MEDLINE
| ID: mdl-10576570
ABSTRACT
A case control study was conducted to evaluate the significance of Neospora caninum infections in cattle in England and Wales. The prevalence of N. caninum in normally calving cattle (the control group; n = 418) and aborting cattle (n = 633) was estimated using a commercial antibody-detection ELISA. Prevalence estimates for bovine virus diarrhoea virus, infectious bovine rhinotracheitis virus and Leptospira hardjo were also obtained by serology. The prevalence of N. caninum was significantly higher (P < 0.0001) in the aborting group (18%; 95% confidence interval 15%, 21%) than in the control group (6%; 95% confidence interval 4%, 8%); the latter is the first estimate, to date, of the national seroprevalence of N. caninum in dairy cattle in England and Wales. Prevalence estimates for bovine virus diarrhoea virus, infectious bovine rhinotracheitis virus and L. hardjo were not found to be higher in the aborting cattle than in the control group. With N. caninum, a strong association between seropositivity and abortion was found, with seropositive cows being 3.5-times more likely to abort than seronegative cows (odds ratio = 3.49; 95% confidence interval 2.16, 5.69). Furthermore, 12.5% of abortions in dairy cattle in England and Wales may be attributable to N. caninum, as indicated by estimation of the population aetiological fraction.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Anticuerpos Antiprotozoarios
/
Enfermedades de los Bovinos
/
Complicaciones Parasitarias del Embarazo
/
Coccidiosis
/
Neospora
/
Aborto Veterinario
Tipo de estudio:
Observational_studies
/
Risk_factors_studies
Límite:
Animals
/
Pregnancy
País/Región como asunto:
Europa
Idioma:
En
Revista:
Int J Parasitol
Año:
1999
Tipo del documento:
Article
País de afiliación:
Reino Unido