Balderrama AP, Castro L, Gortáres P, Lares F, Balderas JJ, Chaidez C

Language: Spanish
References: 36
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ABSTRACT

Giardia lamblia cysts and Cryptosporidium parvum oocyst come to cause intestinal diseases through the consumption of contaminated food and water by humans and animals. Cysts and oocysts are resistant to normal chlorination systems. The minimum infectious doses are approximately 10 cysts/oocysts ingested. The ICR method was used for quantification of cysts and oocysts. The determination of viability was performed by vital staining. Giardia lamblia cysts were found in greater numbers than Cryptosporidium parvum oocysts. Giardia lamblia cysts were viable at 39% after the treatment process and Cryptosporidium parvum oocysts at 71%. The incidence of Giardia lamblia and Cryptosporidium parvum is higher in autumn. During the investigation the Giardia lamblia cysts incidence were significantly affected (p ‹0.05).

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