| estimation of neospora caninum seroprevalence in dairy cattle from normandy, france. | an epidemiological study was conducted in orne (france) on randomly selected dairy herds (42 herds including 1,924 cows and heifers, which were at least 15 months old). the aim was primarily to estimate the seroprevalence of neospora caninum infection from two blood samples per cow, using an enzyme-linked immunosorbent assay (elisa) for n. caninum (one positive result indicating infection). the second aim was to test the association between some individual and herd factors and n. caninum seropos ... | 1999 | 10543387 |
| prevalence of cryptosporidium infection in calves in france. | two multicentre surveys were conducted in france to estimate the prevalence of cryptosporidium infection in calves using qualitative elisa for detection of cryptosporidium coproantigens and oocysts. the first survey involved 4-12-day-old calves in six dairy-calf distribution centres, collecting calves from seven administrative regions (aquitaine, bretagne, franche-comté, lorraine, normandie, nord, pays de loire). for each region, 20 calves were selected every month for 12 consecutive months (oct ... | 2000 | 10729640 |
| prevalence of bse in cattle found dead, euthanased or emergency slaughtered on farms in western france in 2000, 2001 and 2002. | the overall trend and the trend within birth cohorts of the prevalence of bovine spongiform encephalopathy (bse) in cattle found dead, euthanased or emergency slaughtered on farms in the bretagne, basse normandie and pays de la loire regions of france, during the periods from august 7 to december 22 in 2000, 2001 and 2002, were analysed by non-conditional logistic regression, adjusted for the region and for the type of animals. the overall prevalence of bse during these three periods decreased f ... | 2004 | 15537142 |
| how the surveillance system may bias the results of analytical epidemiological studies on bse: prevalence among dairy versus beef suckler cattle breeds in france. | until recently, epidemiological studies on bovine spongiform encephalopathy (bse) were based on mandatory reporting systems (mrs) of clinically suspect bovines only, but rapid diagnostic tests were validated in 1999 and are used for targeted surveillance in switzerland, france and other countries, as a complementary and secondary tool. data on 30491 cattle issued from a french pilot program targeted at cattle having died on the farm, subjected to euthanasia or sent for emergency slaughter, did n ... | 2003 | 12657210 |
| targeted surveillance to assess the prevalence of bse in high-risk populations in western france and the associated risk factors. | a pilot study was set up for the first time in france in august 2000, to obtain more precise estimates on the bse epidemic in france. three categories of cattle at risk of bse (found dead on-farm, euthanased and emergency slaughtered) were sampled exhaustively from august 7 to december 22, 2000, in the three regions assumed to be the most affected with bse in france (basse-normandie, bretagne and pays de la loire). the samples were checked by using prionics tests, and positive samples were confi ... | 2002 | 12166421 |