A total of 1700 male food handlers, above 20 years of age who came for health clearance certificate were the subjects of the present study Health assessment questionnaire was filled out on each person including dietry habits, water supply, history of diarrhoeal disease. Clinical examination and stool samples collection in 3 alternative days were performed. The food handlers were divided into symptomatic (700) and asymptomatic (1000). Different concentration methods as well as test tube culture for Strongyloides larvae,were done. Samples were preserved in PVA, trichrome stained slides were examined for protozoal parasites. Nineteen percent had intestinal parasite G. lamblia, E. histolytica, A.lumbricoides, S. mansoni, A. duodenale, T. trichura, H. nana, St. stercoralis, E. vermicularis and mixed infection & non-pathogenic; E. coli, I. Butschlii, C. mesnili, E. nana, T. hominis and mixed infection. Blastocystis hominis was recovered from stools of 8.5% of symptomatic and 4% of asymptomatic. 2%symptomatic and0.7% asymptomatic had. B. hominis significant infection. B.hominis was considered significant if> 5 organisms per HPF was counted. |
