Abstract
A disease survey was conducted between 2014 and 2018 in the Polish goat population to determine the seroprevalence of pestiviral infection. Blood samples from 910 goats (782 females and 128 males) were collected in 62 goat herds and tested for bovine viral diarrhea virus (BVDV) infection with a competitive ELISA in a serial fashion. Between 10 and 13 adult female goats were randomly selected from each herd, assuming individual-level seroprevalence of pestiviral infection in a herd of at least 30% and a level of confidence of 95%. In each herd, all males were tested. At least one seropositive goat was found in each of the 4 herds. However, in one herd, the only positive goat tested negative in serial retesting. Finally, 3 herds were consi-dered as seropositive which yielded apparent herd-level seroprevalence of 4.8% (CI 95%: 1.7%, 13.3%). After adjusting for the ELISA herd-level sensitivity and specificity, the true herd-level prevalence was 3.9% (CI 95%: 1.2%, 12.0%). No males tested positive. In 2 out of 3 seropositive herds, goats regularly shared pastures with cattle.
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