#$%^&*AU2018201329B220191114.pdf#####Abstract The present invention is based upon the identification of a number of antigens derived from species of the genus Teladorsagia, which can be used to raise immune responses in animals - particularly those animals susceptible or predisposed to 5 infection by (or with) one or more Teladorsagia species. The antigens may be exploited to provide compositions and vaccines for raising protective immune responses in animals - the protective immune responses serving to reduce, prevent, treat or eliminate Teladorsagiainfections/infestations.