Fig. 1From: Prevalence of Borrelia burgdorferi, Anaplasma spp., Ehrlichia spp. and Dirofilaria immitis in Canadian dogs, 2008 to 2015: a repeat cross-sectional studyVenn diagram of canine co-infection in Canada (2008–2015), for Borrelia burgdorferi, Ehrlichia and Anaplasma spp., and the antigen of Dirofilaria immitis (n = 753,468)Back to article page