Tick-Borne Pathogens, spp. and s.l., in Sled and Companion Dogs from Central and North-Eastern Europe.

Ticks are important vectors of numerous pathogens of medical and veterinary significance. The aim of the current study was to determine the prevalence of spp. and s.l. in sled and pet dogs from Central and North-Eastern Europe. Neither spp. nor s.l. infections were detected in sled dogs from seven countries (Poland, Lithuania, Latvia, Estonia, Belarus, Russia and Finland). The DNA of spp. was detected in 100% of symptomatic and 5.4% of asymptomatic pet dogs from Poland. Similarly, the DNA of spp. was identified in 82% of symptomatic and 3.8% of asymptomatic pet dogs from Ukraine. The DNA of s.l. was detected in 4.4% of pet dogs. Molecular typing confirmed the presence of and sensu stricto (s.s.) in selected samples. Four dogs were co-infected by and s.l. Tick-borne pathogens constitute a serious health threat to pet dogs in Central and South-Eastern Europe, but were not observed among sled dogs from the same region of Europe nor in the Baltic countries.