Ovos e larvas de helmintos nos sanitários de pré-escolas municipais de Sorocaba, SP e suas freqüências nas fezes das crianças

Abstract

Resumo O objetivo desta pesquisa foi relacionar a presença de ovos e/ou larvas de helmintos em elementos dos sanitários com a freqüência dos mesmos nas fezes de seus usuários. Três amostras das fezes de 1050 crianças em idade pré-escolar, examinadas pelo método de sedimentação, foram positivas para 184 ovos ou larvas de helmintos, em 162 crianças. Dos 465 elementos dos sanitários (assento, descarga, trinco, maçanetas e registro de torneira) de 12 pré-escolas municipais de Sorocaba examinados com fita adesiva transparente sobre lâmina de microscopia estavam contaminados, sendo encontrados 18 ovos de Ascaris lumbricoides, 1 de Enterobius vermicularis e 4 larvas de nematóides parcialmente alteradas. Não houve correlação significante entre a contaminação de elementos de sanitários e das fezes de seus usuários. Palavras-chaves: Helmintos. Helmintíases intestinais. Sanitários com ovos de helmintos. AbstractThe purpose of this research was to establish a relationship between the presence of helminth eggs in the water closet elements and the frequency of these eggs in the feces of their users. 1050 kindergarden children's feces were examinated by the spontaneous sedimentation method in three samples of feces, which were positive in 162 children presenting 184 eggs or helmints larvs. From the 465 water closet elements, constituted of : toilet seat, internal and external door knobs, latch, faucet handle and discharge valve, of 12 Infant Educational Centers of Sorocaba, examinated by sticking some transparent adhesive tape on microscopy slides, were found 18 eggs of Ascaris lumbricoides; 1 of Enterobius vermicularis and 4 larvs of nemathoids partially deformed were found in 23 infected elements. There wasn't significance relationship between the elements of water closets and user 's feces contamination. Key-words: Helminth. Intestinal helminthiasis. Water closets with helminth eggs. 2 . Devido o caráter flutuante da população estudada, os exames coproparasitológicos não foram realizados e, portanto, não foi possível a avaliação do grau de importância dessa contaminação.

Intestinal parasites inside public restrooms and buses from the city of Uberlândia, Minas Gerais, Brazil

“…The type of external membrane of the eggs provides adherence to surfaces. A similar study has found A. lumbricoides to be predominant in Elementary schools' restrooms, due to an elevated incidence of ascaridiasis in that population 5 . The occurrence of ascariasis is greatest where warm temperature and high humidity allow the eggs to embryonate throughout the year.…”

“…The occurrence of the parasites (6.25%) observed in the restrooms was lower than that reported by AIDAR-SOBRINHO et al 1 who detected 9.1% positivity among samples from public restrooms in Sorocaba, São Paulo, Brazil. On the other hand, the prevalence of contamination in a pre-school restroom in Sorocaba reported by COELHO et al 5 was only 4.9%. The difference may be due to the ages of the different users.…”

“…Sanitary education along with changes in cultural habits is also a relevant factor 12 . The contamination of bathroom installations can promote the dissemination of enteroparasites 1,5,9 . In this sense, public transport vehicles are also an important source of infection 7,10,11 .…”

Children's Environment in Brazil: From Domestic (Indoor) to Regional Threats

“…In the public day care centers, 64% were positive for larvae and 36% for eggs. The researchers found in 23 infected elements eggs of Ascaris lumbricoides, Enterobius vermicularis and larvs of nemathoids partially deformed [96].…”

“…On the other hand, studies suggested that a reduction of the prevalence of the parasites infections was possible by the increase of sewage systems [73,88,89,91,92], the use of a water filter [70] and the household being in an urban area [96].…”