Protection of ewes against Teladorsagia circumcincta infection in the periparturient period by vaccination with recombinant antigens.

•Immunisation of ewes to protect against teladorsagiosis in their lambs is proposed.•Immunisation of ewes with a recombinant Teladorsagia circumcincta vaccine induced protection.•The mechanism of vaccine-induced immunity remains elusive.•The levels of reduction in parasite egg shedding from immunised ewes was 45%.