Contamination of soil with parasite eggs and oocysts in and around Kuala Lumpur, Malaysia.

S, Uga; Oikawa, Hiroto; Lee, C.C.; Amin-Babjee, S. M.; Rai, Srinidhi

doi:10.2149/tmh1973.24.125

Cited by 24 publications

(31 citation statements)

References 2 publications

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“…In general, the prevalence of nematode eggs in different works is due to their resistance to environmental conditions and poor sanitary and hygienic conditions [15]. Uga et al [16, 17], Stojcevic et al [18], and Tavalla et al [19] observed in their studies in Nepal, Croatia, and Tehran, respectively, the presence of protozoan cysts ( Eimeria , Isospora , Cryptosporidium , and Giardia ) which were not found in this work. This could be due to (1) the different techniques of analysis used and (2) the soil texture of Dschang.…”

Section: Discussionmentioning

confidence: 52%

Profile of Geohelminth Eggs, Cysts, and Oocysts of Protozoans Contaminating the Soils of Ten Primary Schools in Dschang, West Cameroon

Nkouayep

Tchakounté

Poné

2017

Journal of Parasitology Research

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Helminthiasis and protozoans infections have been recognized as an important public health problem. The aim of the present study was to screen soil samples collected from 10 primary schools in the city of Dschang for the presence of soil-transmitted helminth eggs, cysts, and oocysts of protozoans. A total of 400 soil samples were collected around latrines, at playgrounds, and behind classrooms in each school. These samples were examined using the sucrose flotation method. From the result obtained, an overall contamination rate of 7.75% was observed. Five genera of nematodes (Ascaris, Trichuris, Capillaria, Cooperia, and hookworms) were identified, while neither cysts nor oocysts of protozoans were detected. The contamination rate and the number of species found were significantly different in wet season as compared to the dry season. During the rainy season, this rate was 12.5% with all the parasitic stages identified, while, in the dry season, the soil contamination rate was 3% with the presence of only two genera (Ascaris and Trichuris). This suggests that parasite infection may occur mainly in rainy season rather than in the dry season. The most common eggs were those of Ascaris with 2% and 5% contamination rates in the dry and rainy seasons, respectively. Also, the soils around latrines were more contaminated (11.9%) as compared to those collected behind classrooms (7.5%) and those at playground (2.5%). It was concluded that the pupils of these schools may have played a major role in the contamination of their environment. Thus, sanitary education, enforcement of basic rules of hygiene, and deworming remain a necessity in the entire population of the study area in general and in the schools in particular in order to prevent helminth infections and to ensure effective environmental health.

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Section: Discussionmentioning

confidence: 52%

Profile of Geohelminth Eggs, Cysts, and Oocysts of Protozoans Contaminating the Soils of Ten Primary Schools in Dschang, West Cameroon

Nkouayep

Tchakounté

Poné

2017

Journal of Parasitology Research

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“…Heavy contamination of soils by parasite eggs has frequently been reported, not only of historical societies but even of contemporary developing countries, showing the high prevalence of parasite infection (Schulz and Kroeger, 1992;Uga et al, 1995Uga et al, , 1997Chongsuvivatwong et al, 1999). In the present study, indeed, our hypothesis was supported by the paleo-parasitological evidence obtained from soil samples of Old Seoul City.…”

Section: Discussionmentioning

confidence: 99%

Paleo-parasitological study on the soils collected from archaeological sites in old district of Seoul City

Shin

Lee

et al. 2011

Journal of Archaeological Science

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“…It was evident that a high humidity accelerated egg development as infective eggs were observed by day 7. Sommerfelt et al (1992Sommerfelt et al ( , 1994 in Argentina, O'Lorcain (1994) in Ireland, and Uga et al (1995Uga et al ( , 1996Uga et al ( , 1997 in Asia, screened soil samples from public parks for enteroparasites. All agreed that soils in the more humid areas were more highly contaminated with T. canis eggs, but no specific values for moisture levels in the soils were reported.…”

Section: Discussionmentioning

confidence: 99%

Effects of temperature and humidity on the development of eggs of Toxocara canis under laboratory conditions

Gamboa¹

2005

J. Helminthol.

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The influence of temperature and humidity on the survival and development of Toxocara canis eggs in an in vitro model system was investigated. Two soil samples were inoculated with T. canis eggs and maintained at 3% and 50% humidity and temperatures of 19-24 degrees C. Nine soil samples were inoculated with T. canis eggs of which three samples were kept at 4 degrees C with humidities at 3%, 15%, and 30%; three were maintained at 21 degrees C and three more were incubated at 34 degrees C, and at the same three humidity levels. Samples were monitored every 7 days for a total of 2 months, for the presence and development of eggs. With increasing temperature, the number of eggs undergoing development increased (P<0.01); the number of deformed eggs decreased, the number of infective eggs increased (P<0.01), and egg maturation was accelerated. A decrease in the survival of infective eggs occurred at 34 degrees C. An increase in humidity produced a rise in the number of developed eggs at all three temperatures (P<0.01). This study suggests that elevated temperatures accelerated the development as well as the degradation of eggs of T. canis, whereas the range in humidity was directly correlated with egg development.

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Contamination of soil with parasite eggs and oocysts in and around Kuala Lumpur, Malaysia.

Cited by 24 publications

References 2 publications

Profile of Geohelminth Eggs, Cysts, and Oocysts of Protozoans Contaminating the Soils of Ten Primary Schools in Dschang, West Cameroon

Profile of Geohelminth Eggs, Cysts, and Oocysts of Protozoans Contaminating the Soils of Ten Primary Schools in Dschang, West Cameroon

Paleo-parasitological study on the soils collected from archaeological sites in old district of Seoul City

Effects of temperature and humidity on the development of eggs of Toxocara canis under laboratory conditions

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