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Id: 27242
Autor: Solo-Gabriele, Helena Maria; LeRoy Ager, Arba; Fitzgerald Lindo, John; Dubón, José María; Neumeister, Shondra Michelle; Karas Baum, Marianna; Palmer, Carol Jean.
Título: Occurrence of Cryptosporidium oocysts and Giardia cysts in water supplies of San Pedro Sula, Honduras
Fonte: Revista Panamericana de Salud Pública (OPS) = Pan American Journal of Public Health (PAHO);4(6):398-400, dic. 1998. tab.
Idioma: En.
Resumo: During June 1996, water supplies of the city of San Pedro Sula, Honduras, were sampled to obtain an assessment of Cryptosporidium oocyst and Giardia cyst concentrations. Each sample was concentrated and stained with an indirect immunofluorescent antibody, and parasites were counted through microscopic analysis. In three surface water supplies, Cryptosporidium oocyst concentrations ranged from 58 to 260 oocysts per 100 L, and Giardia cysts were present in concentrations ranging from 380 to 2 100 cysts per 100 L. Unlike the surface water samples, groundwater had a higher concentration of Cryptosporidium oocysts (26/100 L) than Giardia cysts (6/100 L), suggesting that the groundwater aquifer protects the water supply more effectively from larger Giardia cysts. Cryptosporidium oocyst concentrations are within the typical range for surface water supplies in North America whereas Giardia cyst concentrations are elevated. Efforts should be made to protect raw water from sources of contamination
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