1. Animal Health and Veterinary Laboratories Agency (AHVLA) Carmarthen; Job's Well Road, Johnstown Carmarthen SA31 3EZ UK
2. Department of Epidemiology and Population Health; Institute of Infection and Global Health, Leahurst; Chester High Road Neston Cheshire CH64 7TE UK
3. Department of Parasitology; Faculty of Veterinary Medicine; University of Kafkas; Kars 36040 Turkey
4. Animal Health and Veterinary Laboratories Agency (AHVLA); Penrith Investigation Centre and Laboratory; Calthwaite Penrith Cumbria CA11 9RR UK
5. Veterinary Parasitology; Institute of Infection and Global Health; University of Liverpool; Pembroke Place Liverpool L69 7ZJ UK