2000
DOI: 10.1590/s1517-83822000000200017
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Detection of Cryptosporidium sp. oocysts in groundwater for human consumption in Itaquaquecetuba city, S. Paulo-Brazil

Abstract: Cryptosporidium is an emergent pathogen that causes profuse diarrhea in humans. Outbreaks of human cryptosporidiosis have implicated water as a possible source of contamination. In this study the presence of Cryptosporidium sp. oocysts was investigated as well as the fecal contamination in groundwater for consumption in Itaquaquecetuba São Paulo. Therefore, it was possible to notice that the septic tanks were located close to the wells, exposing them to risk of contamination. As a consequence of these results … Show more

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Cited by 22 publications
(20 citation statements)
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“…1). Sabe-se que águas subterrâneas, pelo processo de infiltração pelas camadas do solo, apresentam densidade de (oo)cistos de protozoários mais baixa que os mananciais superficiais (Hancock et al, 1997;USEPA, 1998;Gamba al., 2000). Os mananciais superficiais podem, assim, funcionar como prováveis fontes de infecção para os animais, sendo responsáveis, inclusive, pela introdução desses bio-agentes patogênicos nas propriedades e nos rebanhos.…”
Section: Resultsunclassified
See 1 more Smart Citation
“…1). Sabe-se que águas subterrâneas, pelo processo de infiltração pelas camadas do solo, apresentam densidade de (oo)cistos de protozoários mais baixa que os mananciais superficiais (Hancock et al, 1997;USEPA, 1998;Gamba al., 2000). Os mananciais superficiais podem, assim, funcionar como prováveis fontes de infecção para os animais, sendo responsáveis, inclusive, pela introdução desses bio-agentes patogênicos nas propriedades e nos rebanhos.…”
Section: Resultsunclassified
“…e oocistos de Cryptosporidium spp. mediante consumo de água tratada e distribuída por sistemas de abastecimento (Allen et al, 2000;Fayer et al, 2000;Gamba et al, 2000;Kosek et al, 2001;Tzipori e Ward, 2002).…”
Section: Introductionunclassified
“…19,20,[22][23][24][25][26][27][28][29][30]32,33 Despite the number of reports indicating the association of this parasite with diarrhea in different settings and the presence of this parasite in the environment in different regions of this country, only 1 molecular assessment has been previously performed, in clinical samples collected in Fortaleza, Brazil. 47 We used previously described molecular tools 39,41,42 to analyze samples collected from children attending a day care at the Hospital das Clínicas, from March to May 2001, during which an outbreak of cryptosporidiosis took place.…”
Section: Discussionmentioning
confidence: 99%
“…[22][23][24][25][26][27][28] Environmental contamination with Cryptosporidium oocysts has been observed in rivers and public water reservoirs serving different regions in Sao Paulo. [29][30][31][32] Nevertheless, no massive cryptosporidiosis outbreaks associated with consumption of water in these regions have been reported. In the state of São Paulo, data gathered on waterborne and foodborne epidemics reported to the Center of Epidemiological Vigilance (CVE) indicated that 10 outbreaks of cryptosporidiosis took place within the period of 1995 to 2003.…”
Section: Introductionmentioning
confidence: 99%
“…Não se dispõe, ainda, de métodos aplicáveis em rotinas laboratoriais, dificultando o estudo da incidência desses parasitos na água. Apesar disso, alguns trabalhos, realizados no Brasil, demonstraram Cryptosporidium sp e Giardia sp, tanto em amostras de águas in natura como em águas tratadas (1,5,9) . Diante dessas dificuldades, um subsídio para indicar a possível ocorrência desses protozoários no ambiente aquático é a associação entre os parâmetros microbiológicos e físico-químicos da água (10) .…”
Section: Introductionunclassified