Giardia lamblia infection risk modeling in Mexico city's flood water
Urban floods can be contaminated with fecal material and pathogens. Evidence on infection risks associated with exposure to waterborne pathogens in urban floods is lacking. We address this gap by assessing the risk of infection from exposure to Giardia lamblia in urban flood water samples in Mexico...
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| Format: | Article |
| Language: | English |
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IWA Publishing
2022-04-01
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| Series: | Water Science and Technology |
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| Online Access: | http://wst.iwaponline.com/content/85/7/2161 |
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| author | Nallely Vázquez-Salvador Miguel Alt Silva-Magaña Marco A. Tapia-Palacios Marisa Mazari-Hiriart Manuel Mora-López Yosune Miquelajauregui |
| author_facet | Nallely Vázquez-Salvador Miguel Alt Silva-Magaña Marco A. Tapia-Palacios Marisa Mazari-Hiriart Manuel Mora-López Yosune Miquelajauregui |
| author_sort | Nallely Vázquez-Salvador |
| collection | DOAJ |
| description | Urban floods can be contaminated with fecal material and pathogens. Evidence on infection risks associated with exposure to waterborne pathogens in urban floods is lacking. We address this gap by assessing the risk of infection from exposure to Giardia lamblia in urban flood water samples in Mexico City using a QMRA. Historical flood data was used to build severity indices and to test for correlations with risk of infection estimates. Results indicate similar maximal pathogen densities in urban flood water samples to those from wastewater treatment plants. Significant positive correlations between risk of G. lamblia infection and severity indices suggest that floods could act as an important source of pathogen transmission in Mexico City. Risk of infection to G. lamblia is greater in the city's periphery, which is characterized by high marginalization levels. We argue that these risks should be managed by engaging citizens and water and health authorities in decision making. HIGHLIGHTS
Urban floods represent a relevant pathogen spread source on human population and a risk that should be assessed.;
There is evidence of fecal contamination in Mexico City's flood water.;
Children are at much higher risk for Giardia lamblia infection than adults.;
Recurrent floods are conducive to increased infection risk from exposure to G. lamblia.;
Exposure to G. lamblia is greater in the city's periphery.; |
| first_indexed | 2024-12-12T18:53:52Z |
| format | Article |
| id | doaj.art-0de4300c03a74c788cfea9b1293064bb |
| institution | Directory Open Access Journal |
| issn | 0273-1223 1996-9732 |
| language | English |
| last_indexed | 2024-12-12T18:53:52Z |
| publishDate | 2022-04-01 |
| publisher | IWA Publishing |
| record_format | Article |
| series | Water Science and Technology |
| spelling | doaj.art-0de4300c03a74c788cfea9b1293064bb2022-12-22T00:15:17ZengIWA PublishingWater Science and Technology0273-12231996-97322022-04-018572161217210.2166/wst.2022.094094Giardia lamblia infection risk modeling in Mexico city's flood waterNallely Vázquez-Salvador0Miguel Alt Silva-Magaña1Marco A. Tapia-Palacios2Marisa Mazari-Hiriart3Manuel Mora-López4Yosune Miquelajauregui5 Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico Facultad de Ciencias, UNAM, Mexico City, Mexico Laboratorio Nacional de Ciencias de la Sostenibilidad, Instituto de Ecología, Universidad Nacional Autónoma de México (UNAM), Mexico City, Mexico Urban floods can be contaminated with fecal material and pathogens. Evidence on infection risks associated with exposure to waterborne pathogens in urban floods is lacking. We address this gap by assessing the risk of infection from exposure to Giardia lamblia in urban flood water samples in Mexico City using a QMRA. Historical flood data was used to build severity indices and to test for correlations with risk of infection estimates. Results indicate similar maximal pathogen densities in urban flood water samples to those from wastewater treatment plants. Significant positive correlations between risk of G. lamblia infection and severity indices suggest that floods could act as an important source of pathogen transmission in Mexico City. Risk of infection to G. lamblia is greater in the city's periphery, which is characterized by high marginalization levels. We argue that these risks should be managed by engaging citizens and water and health authorities in decision making. HIGHLIGHTS Urban floods represent a relevant pathogen spread source on human population and a risk that should be assessed.; There is evidence of fecal contamination in Mexico City's flood water.; Children are at much higher risk for Giardia lamblia infection than adults.; Recurrent floods are conducive to increased infection risk from exposure to G. lamblia.; Exposure to G. lamblia is greater in the city's periphery.;http://wst.iwaponline.com/content/85/7/2161giardia lambliainfection risk modelingmexico cityqmraurban floods |
| spellingShingle | Nallely Vázquez-Salvador Miguel Alt Silva-Magaña Marco A. Tapia-Palacios Marisa Mazari-Hiriart Manuel Mora-López Yosune Miquelajauregui Giardia lamblia infection risk modeling in Mexico city's flood water Water Science and Technology giardia lamblia infection risk modeling mexico city qmra urban floods |
| title | Giardia lamblia infection risk modeling in Mexico city's flood water |
| title_full | Giardia lamblia infection risk modeling in Mexico city's flood water |
| title_fullStr | Giardia lamblia infection risk modeling in Mexico city's flood water |
| title_full_unstemmed | Giardia lamblia infection risk modeling in Mexico city's flood water |
| title_short | Giardia lamblia infection risk modeling in Mexico city's flood water |
| title_sort | giardia lamblia infection risk modeling in mexico city s flood water |
| topic | giardia lamblia infection risk modeling mexico city qmra urban floods |
| url | http://wst.iwaponline.com/content/85/7/2161 |
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