Trypanosoma evansi control and containment in Australasia.

Animal trypanosomosis caused by Trypanosoma evansi is endemic throughout Southeast Asia, where it is an important constraint on the productivity of smallholder livestock. In the past decade, T. evansi has emerged as a serious threat to the viability of smallholder livestock industries in the Philippines and causes severe disease outbreaks with high mortality. Trypanosoma evansi also poses a threat to livestock and native fauna in Australia and Papua New Guinea (PNG) where it is absent, but the risk of it spreading from Indonesia is high. Surveillance for T. evansi in PNG and Australia, and its control in the Philippines is restricted by the poor sensitivity and inadequate validation of existing diagnostic tests and lack of information on the determinants of infection.