Disease burden from simultaneous exposure of Cryptosporidium sp. and Giardia sp. and land use vulnerability assessment in a Costa Rican drinking water system

Mora, Eric Morales; Ibarra-Mejía, Gabriel; Reyes, Liliana; Barrantes, Kenia; Achí, Rosario; Chacón, Luz

doi:10.1016/j.mran.2022.100213

Cited by 2 publications

(3 citation statements)

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“…In addition to this indicator, it was also observed that the presence of oocysts is related to turbidity; it presented a linear correlation of 0.455. The influence of conditions of land use in the parasitology quality of the surface sources was confirmed in the study conducted in Costa Rica, where the presence of urban areas promoted greater protozoan concentration [16].…”

Section: Discussionmentioning

confidence: 68%

“…These results suggest that the excrements of bovines can be a pollution source for the analyzed surface sources. The watersheds with predominant urban areas in Costa Rica presented a greater concentration of pathogens and the urban sewage spill was characterized as the main pollution source, hence there being no seasonal variation in the protozoan concentration [16].…”

Section: Discussionmentioning

confidence: 99%

“…The potential effects of pathogenic exposure, daily and annual, must be inferior to the accepted risk of infection per 10,000 inhabitants (10 −4 ) [14]. This risk has also been quantified in watercourses in the United States [15], Costa Rica [16], Brazil [17][18][19] and Canada [20].…”

Section: Introductionmentioning

confidence: 99%

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Health Risks in a Brazilian Cerrado Population Due to Pathogens Transmitted through Water and Land Use Conditions

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Bezerra

Basso

et al. 2022

Water

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Cryptosporidium and Giardia are pathogenic agents which cause risk to public health. The goal of this research was to evaluate the risk of infection by cryptosporidiosis and giardiasis in a population of the Cerrado biome and its relation to land use. Raw water samples were collected from 41 different surface sources of the state of Goiás (Brazil). The parasites were quantified via the membrane filtration method. The probability of an individual contracting an infection after consuming contaminated water was estimated using the quantitative microbial risk assessment. Generally, the analyzed watersheds (WS) presented Giardia cysts in 63.4% of the samples (<LD at 116.67 cysts/L) and Cryptosporidium oocysts in 87.8% of the samples (<LD at 300 oocysts/L). The WS with pasture predominance were statistically associated with the presence of Cryptosporidium, in which the possible contamination source is the excrements of animals. There is a greater risk of giardiasis. It is concluded that there is a need to implement improvement actions regarding environmental quality and the management of the use and occupation of surface sources in the Cerrado Biome, in order to reduce the spreading of diseases and negative impacts to the local population.

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Section: Discussionmentioning

confidence: 68%

Section: Discussionmentioning

confidence: 99%

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Health Risks in a Brazilian Cerrado Population Due to Pathogens Transmitted through Water and Land Use Conditions

Silva

Bezerra

Basso

et al. 2022

Water

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Review of the concentration procedures used to determine the parasitological water quality in Latin America (2000–2022)

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Sanguino-Jorquera,

Unzaga

2024

Water Practice &Amp; Technology

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The aim was to review the methodologies used in the concentration of intestinal parasites in different water samples in Latin America. The period of the review was between September and November 2022. Of the total number of articles (N = 87), the search engine with the most articles matching the specified keywords was Google Scholar (56.3% = 49 articles), and Brazil was the country that published the most articles (28.7%). Most of the studies were conducted for surface waters (75.9%) and used methodologies with physical separation without subsequent parasitological concentration (76.9%). However, the ultrafiltration method (UFM) with subsequent parasitological concentration recovered a greater number and type of parasite species. The descriptive study of the review shows that the procedure of using UFM with a parasitological method of flotation and sedimentation would allow an efficient concentration of the parasite species present in the water sample.

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Disease burden from simultaneous exposure of Cryptosporidium sp. and Giardia sp. and land use vulnerability assessment in a Costa Rican drinking water system

Cited by 2 publications

References 44 publications

Health Risks in a Brazilian Cerrado Population Due to Pathogens Transmitted through Water and Land Use Conditions

Health Risks in a Brazilian Cerrado Population Due to Pathogens Transmitted through Water and Land Use Conditions

Review of the concentration procedures used to determine the parasitological water quality in Latin America (2000–2022)

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