Importancia de la detección del protozoario zoonótico Cryptosporidium parvum en muestras de agua en Chile
Cryptosporidiosis is a parasitic disease of the digestive tract caused by protozoa of the genus Cryptosporidium. Species of this agent have been reported since the beginning of the twentieth century. Just at the end of it, it has been recognized as a pathogen widely distributed as a threat to public health. In human beings and other animal species, is considered an emerging or re emerging infectious agent. In 1984, the first outbreak of cryptosporidiosis transmitted through water, was described. Since then, many authors have shown the presence of this endoparasite in surface water, pool water, untreated wastewater and even drinking water, suggesting its role as a causative agent of diarrhea. Also there is evidence that water purification methods would not be completely efficient to remove or inactivate this endoparasite. The persistence and spread of this protozoan in the environment and drinking water are based on three biological conditions: 1) Its oocysts are immediately infectious, 2) it have a small size and 3) it have resistance to the environmental conditions, as well as the action of disinfectants and physical processes of water purification treatment. The laboratory diagnostic methods are diverse and can vary according to the origin of the samples. Microscopic, immunological and molecular protocols can be used in either patients or environmental samples. The development of molecular diagnostic technique has allowed the identification of Cryptosporidium hominis and C. parvum witch infections have the highest prevalence in human beings. In Chile, this parasitic disease is endemic infecting human domestic and wildlife animals. Studies of cryptosporidiosis in humans and livestock animals banegda dne itnec tth teh ims zido-o8n0o'sti',c baugte notn ilny trheicse mntalytr isxo.
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| Format: | Digital revista |
| Language: | spa |
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Universidad de Chile. Facultad de Ciencias Veterinarias y Pecuarias
2010
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| Online Access: | https://avancesveterinaria.uchile.cl/index.php/ACV/article/view/18294 |
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