Toxoplasmosis in sheep 1. Naturally-occurring heat-stable and heat-labile antibodies, and accessory factor-like activity in sheep sera

Abstract

Extract

Perinatal mortality of lambs in New Zealand associated with Toxoplasma infection has been reported by Hartley and Marshall (1957). Recognition of the syndrome was based on morbid anatomical and histopathological considerations, and the association with Toxoplasma infection was confirmed by isolation of the organism by mouse inoculation. Although these techniques served a useful purpose in the primary recognition of toxoplasmosis, they are not easily adaptable to studies of epidemiology. Suitable serological tests could be a useful research tool in this type of study.