Abstract
In 2007 a survey on herd-level seroprevalence of Toxoplasma gondii and Neospora caninum infections in goats in Poland was carried out. Sera were collected from all 49 breeding goat herds, scattered over the entire country, with the vast majority of them located in the western, central and northern provinces. Only adult females (≥12 months of age) were included in the study. A herd was recorded as infected if at least one seropositive female was detected. In each herd, simple random sampling was applied and sample size was determined in a way, which allowed to evaluate serological status of a herd at expected individual-level seroprevalence 10% and level of confidence 95%. In total, 1060 sera were tested using two commercial indirect ELISA kits. Sera positive to N. caninum were subsequently confirmed with IFAT. The true herd-level seroprevalence was 100% for T. gondii and 9.0% for N. caninum infection. Three herds positive to T. gondii infection were randomly selected and all adult goats were tested with an ELISA. Individual-level true seroprevalence in these herds ranged from 30.2% to 100%. This is the first time that antibodies to N. caninum have been detected in goats in Poland.
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