“…Distribution is characterised by isolated endemic foci surrounded by regions with no or only sporadic occurrence (Bolt et al 1994). Foci exist in France, Denmark, Cornwall, Wales and the south-east of England (Bolt et al 1994;Willingham et al 1996;Saeed et al 2006;Morgan et al 2005;Morgan et al 2008). Expansion is, however, occurring from these foci into regions that were formerly not endemic, as seen in Great Britain, where new cases have evolved in dogs from Scotland (Helm et al 2009) and northern England (Yamakawa et al 2009) as well as in foxes from Scotland (Philbey and Delgado 2013).…”