Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples
Background: Cryptosporidium oocysts and Giardia cysts can be transmitted by the fecal–oral route and may cause gastrointestinal parasitic zoonoses. These zoonoses are common in rural zones due to the parasites being harbored in fecally contaminated soil. This study assessed the risk of illness (giar...
| Autores principales: | , , , , , , , |
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| Formato: | Artículo |
| Lenguaje: | inglés |
| Publicado: |
2014
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| Acceso en línea: | http://eprints.uanl.mx/15242/1/344.pdf |
| _version_ | 1824414297572245504 |
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| author | Balderrama Carmona, Ana Paola Gortáres Moroyoqui, Pablo Alvarez Valencia, Luis Humberto Castro Espinoza, Luciano Mondaca Fernández, Iram Balderas Cortés, José de Jesús Chaidez Quiroz, Cristóbal Meza Montenegro, María Mercedes |
| author_facet | Balderrama Carmona, Ana Paola Gortáres Moroyoqui, Pablo Alvarez Valencia, Luis Humberto Castro Espinoza, Luciano Mondaca Fernández, Iram Balderas Cortés, José de Jesús Chaidez Quiroz, Cristóbal Meza Montenegro, María Mercedes |
| author_sort | Balderrama Carmona, Ana Paola |
| collection | Repositorio Institucional |
| description | Background: Cryptosporidium oocysts and Giardia cysts can be transmitted by the fecal–oral route and may cause gastrointestinal parasitic zoonoses. These zoonoses are common in rural zones due to the parasites being harbored in fecally contaminated soil. This study assessed the risk of illness (giardiasis and cryptosporidiosis) from inhaling and/or ingesting soil and/or airborne dust in Potam, Mexico.
Methods: To assess the risk of infection, Quantitative Microbial Risk Assessment (QMRA) was employed, with the following steps: (1) hazard identification, (2) hazard exposure, (3) dose–response, and (4) risk characterization.
Results: Cryptosporidium oocysts and Giardia cysts were observed in 52% and 57%, respectively, of total soil samples (n = 21), and in 60% and 80%, respectively, of air samples (n = 12). The calculated annual risks
were higher than 9.9 101 for both parasites in both types of sample.
Conclusions: Soil and air inhalation and/or ingestion are important vehicles for these parasites. To our knowledge, the results obtained in the present study represent the first QMRAs for cryptosporidiosis and giardiasis due to soil and air inhalation/ingestion in Mexico. In addition, this is the first evidence of the microbial air quality around these parasites in rural zones |
| format | Article |
| id | eprints-15242 |
| institution | UANL |
| language | English |
| publishDate | 2014 |
| record_format | eprints |
| spelling | eprints-152422020-01-31T21:45:56Z http://eprints.uanl.mx/15242/ Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples Balderrama Carmona, Ana Paola Gortáres Moroyoqui, Pablo Alvarez Valencia, Luis Humberto Castro Espinoza, Luciano Mondaca Fernández, Iram Balderas Cortés, José de Jesús Chaidez Quiroz, Cristóbal Meza Montenegro, María Mercedes Background: Cryptosporidium oocysts and Giardia cysts can be transmitted by the fecal–oral route and may cause gastrointestinal parasitic zoonoses. These zoonoses are common in rural zones due to the parasites being harbored in fecally contaminated soil. This study assessed the risk of illness (giardiasis and cryptosporidiosis) from inhaling and/or ingesting soil and/or airborne dust in Potam, Mexico. Methods: To assess the risk of infection, Quantitative Microbial Risk Assessment (QMRA) was employed, with the following steps: (1) hazard identification, (2) hazard exposure, (3) dose–response, and (4) risk characterization. Results: Cryptosporidium oocysts and Giardia cysts were observed in 52% and 57%, respectively, of total soil samples (n = 21), and in 60% and 80%, respectively, of air samples (n = 12). The calculated annual risks were higher than 9.9 101 for both parasites in both types of sample. Conclusions: Soil and air inhalation and/or ingestion are important vehicles for these parasites. To our knowledge, the results obtained in the present study represent the first QMRAs for cryptosporidiosis and giardiasis due to soil and air inhalation/ingestion in Mexico. In addition, this is the first evidence of the microbial air quality around these parasites in rural zones 2014 Article PeerReviewed text en cc_by_nc_nd http://eprints.uanl.mx/15242/1/344.pdf http://eprints.uanl.mx/15242/1.haspreviewThumbnailVersion/344.pdf Balderrama Carmona, Ana Paola y Gortáres Moroyoqui, Pablo y Alvarez Valencia, Luis Humberto y Castro Espinoza, Luciano y Mondaca Fernández, Iram y Balderas Cortés, José de Jesús y Chaidez Quiroz, Cristóbal y Meza Montenegro, María Mercedes (2014) Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples. International Journal of Infectious Diseases, 26. pp. 123-127. ISSN 12019712 http://doi.org/10.1016/j.ijid.2014.05.002 doi:10.1016/j.ijid.2014.05.002 |
| spellingShingle | Balderrama Carmona, Ana Paola Gortáres Moroyoqui, Pablo Alvarez Valencia, Luis Humberto Castro Espinoza, Luciano Mondaca Fernández, Iram Balderas Cortés, José de Jesús Chaidez Quiroz, Cristóbal Meza Montenegro, María Mercedes Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| thumbnail | https://rediab.uanl.mx/themes/sandal5/images/online.png |
| title | Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| title_full | Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| title_fullStr | Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| title_full_unstemmed | Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| title_short | Occurrence and quantitative microbial risk assessment of Cryptosporidium and Giardia in soil and air samples |
| title_sort | occurrence and quantitative microbial risk assessment of cryptosporidium and giardia in soil and air samples |
| url | http://eprints.uanl.mx/15242/1/344.pdf |
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