Abstract
A consequence of intensive livestock production is an increase in the incidence and impact of gastrointestinal (GI) parasites. Farmers have sought to redress this shift in the natural host-parasite relationship by chemotherapy. However, with the widespread development of resistance to anthelmintics and the current impetus for sustainable agricultural practices, alternatives such as vaccines are being sought to maintain animal productivity. In this article, David Emery and Barry Wagland discuss recent advances in immunity to nematode infections of ruminants and the development of vaccines made possible by the dogged persistence and ingenuity of cadres of parasitologists who have done more than ‘go through the motions’.
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