“…50 % of positive samples were found in parks and sand pits in Utrecht (Holand) (Jansen et al, 1993), 62.6 % of playground samples in Kirikkale (Turkey) (Özkayhan, 2006), 45 % in parks in Prague (Czech Republic) (Dubná et al, 2008), 23 -49 % in recreation area and city backyards in three Polish cities (Poznan, Katowice, Cracow) (Mizgajska & Luty, 1998;Mizgajska, 2000;Grygierczyk et al, 2003), 39 % and 50 % in holiday resort places in France (Ferré & Dorchies, 2000;Beugnet & Gadat, 1993), 87% in the sand in children's playgrounds in Frankfurt (Duwel, 1984). A lower contamination (1 -8 %) was seen in the playgrounds and parks in Sapporo City (Japan), Melbourne (Australia) and Urmia City (Iran) (Carden et al 2003;Matsuo & Najashio, 2005;Tavassoli et al, 2008), in public gardens in Resistencia city (Argentina), in public yards in Bangkok (Thailand) Wiwanitkit & Waenlor, 2004). Seroprevalence rates reported in humans in different countries reflect the contamination of soil with Toxocara spp.…”