The proceeding paper in this series (Blewett & Watson, 1983) described three simple models for the transmission of Toxoplasma in breeding flocks and each model attributed distinctive characteristics to outbreaks of ovine toxoplasmosis. These characteristics referred to such readily observed features of clinical outbreaks as the recurrence of clinical toxoplasmosis in successive lambing seasons, the distribution of losses within the flock, the introduction of bought-in replacement ewes and the range of clinical signs at lambing. This paper tests the three models described earlier by comparing their predictions with the observed properties of outbreaks of clinical ovine toxoplasmosis.
Bibliographical noteFunding Information:
The data in Table IV were kindly provided by staff at the Veterinary Investigation Centres, Ministry of Agriculture, Fisheries and Food, and the support of the Agricultural Research Council is gratefully acknowledged .