Dipylidium caninum, Ancylostoma spp., and Trichuris spp. Contamination in public parks in Mexico
Romero Núñez, CamiloRamírez Durán, NinfaMendoza Barrera, Germán EduardoMendoza Barrera, ElizabethBautista Gómez, Linda Guilina
Background: Zoonotic parasitoses are a public health problem because they are distributed worldwide. Soil contamination with dog faeces is an important worldwide problem because it facilitates the transmission of zoonotic parasites. It hasbeen reported in different studies that soil contamination by parasites represents a risk factor for the population (mainlychildren) to acquire parasitic diseases caused by Dipylidium caninum, Ancylostoma spp., and Trichuris spp. Therefore, theobjectives of the present study were to analyse soil samples collected from fi ve public parks in the city of Nezahualcoyotl,Mexico for the presence of canine soil-transmitted parasites.Materials, Methods & Results: A total of 1726 soil samples were obtained from fi ve public parks in NezahualcoyotlCounty, Mexico and analysed for Dipylidium caninum, Ancylostoma spp., and Trichuris spp. eggs. Sampling was carriedout in summer 2009 with the permission of the Parks and Public Gardens Nezahualcoyotl Offi ce. Samples were evaluatedusing a fl otation method, using microscopic observation for egg identifi cation. The data were analysed with the KruskalWallis test and average mean percentages of contamination between the parks means were compared using the Nemenyitest. There were differences in the degree of contamination among the parks, but the soil characteristics were not correlatedwith the presence of parasite eggs. Contamination with Dipylidium caninum and Trichuris spp. were positively correlated(r = 0.32, P < 0.0001). Overall, there was a substantial frequency of Ancylostoma spp. (23.7%) and Dipylidium caninum(21.7%), with minor presence of Trichuris spp. (15.3%) in the parks...(AU)
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