“…It was common in some collecting places, achieving 60% infection rate, while in other collecting places it was not recorded at all. This parasite has been thoroughly studied in Slovakia (Košuthová et al, 2004(Košuthová et al, , 2008(Košuthová et al, , 2009Hanzelová et al, 2007), Poland (Mierzejewska et al, 2010(Mierzejewska et al, , 2012, Russia (Reshetnikov et al, 2011a,b) and the Ukraine (Kvach et al, 2013). The species develops via cyclops intermediate hosts, which makes possible its invasion also into Europe.…”