|
LSI e-Catalogue 2012 Veterinary Diagnostic Kits Elisa, PCR and BVD (English) |
|
e-Catalogue LSI 2012 des kits de diagnostic vétérinaire Elisa, PCR et BVD (FR) |
Toxoplasmosis is a parasitic infection due to a protozoon, Toxoplasma gondii. Felids (cats) are the only known definitive hosts for the sexual stages of this parasite and represent the main infectious reservoir although ruminants can act as intermediate hosts (warm-blooded animals). In a hitherto unexposed herd, primary infection results in a wave of abortions, the characteristics of which will depend on the stage of gestation. Infection in the first two months of gestation (under 50 days) usually causes death of the foetus and abortion. If infection occurs at between 70 and 90 days of gestation, most of the foetuses die and those that survive delivery die within hours. If infection occurs after 120 days of gestation, the calf is born apparently healthy but is immunised. In humans, toxoplasmosis poses no threat to most immunocompetent subjects but it can be dangerous for seronegative pregnant women and people with weakened immune defences.