[The prevalence of paratuberculosis in the Plateau de Diesse region].
We analysed 595 cows in 20 herds for serological evidence of paratuberculosis with an ELISA procedure for which we had recently determined a sensitivity of 50% and a specificity of 98%, and we obtained an overall calculated real prevalence of 5.99%. In two herds with clinical cases of paratuberculosis, the calculated true prevalence of seroreactors was 21.47%. In 9 herds with clinical suspicion of Johne's disease, the rate was 4.23%, 9 herds without any clinical suspicion showed a mean prevalence of 0%. Whereas the trend was clear for groups of herds, the observed prevalence in individual herds varied from 0% to 17.9%, without obvious association with manifest clinical problems of paratuberculosis.
Meylan
M
M
Clinique des Animaux de rente et des Chevaux.
Nicolet
J
J
Busato
A
A
Burnens
A
A
Martig
J
J
D000818:Animals; D000907:Antibodies, Bacterial / Q000097:blood; D002417:Cattle; D002418:Cattle Diseases / Q000453:epidemiology*; D005260:Female; D016927:Mycobacterium avium subsp. paratuberculosis / Q000276:immunology; D010283:Paratuberculosis / Q000453:epidemiology*; D015995:Prevalence; D016036:Seroepidemiologic Studies; D013557:Switzerland / Q000453:epidemiology
D000907:Antibodies, Bacterial
Etude de prévalence de la paratuberculose dans la région du Plateau de Diesse.