| prevalence of toxocara canis ova in public playgrounds in the dublin area of ireland. | a total of nine playground sites in dublin city and county were surveyed from which 228 samples were removed. of these samples, 15% were positive for toxocara canis ova and a mean egg density of 1.4 ova/100 g was calculated. two types of playground sites were identified and that the level of toxocaral contamination was found to be greater in 'neighbourhood playgrounds' than in 'adventure playgrounds'. there was no significant difference in the number of positive samples taken from sites both ins ... | 1994 | 7829844 |