Monitoring fresh water contamination with parasites in Taiz, Yemen

ABSTRACT

This study was conducted during the period of October 2003 to May 2004, in Taiz city and different rural regions of Taiz Governorate, Republic of Yemen. The objective of this work was to detect contamination of fresh water sourced with parasites, 145 Fresh water samples were collected from washing and drinking water sources, and investigated for the presence of parasites, Water samples were filtered, concentrated by centrifugation and examined microscopically. The highest prevalence was 59/145 [40.7%], at Al-Maafer area 12/16 [75%] and Warazan, Al-Dhabab and Saber area was 31/50 [62%]. Most water sampoles were positive for Giardia lamblia, Entamoeba histolytica, E. coli, Ascaris lumbricoides, Strongyloides stercoralis, Schistosma sp. And Trichuris trichiura. The lower prevalence found with Hymenolepis nana, while Taenia saginata, Enterobius vermicularis and Ancylostoma doudenale were found in lowest frequencies. These results clearly indicate that most fresh water sources in Taiz Governorate were contaminated with protozoan and helminthes parasites