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Disease agents carried by flies in Dacca city.

Studies were conducted to determine the different disease agents naturally carried by flies in Dacca city by collecting outdoor unbaited flies from 8 different representative locations and identifying the agents in the laboratory. Out of 96 fly pools containing 25 flies each, 62.5%, 46.9%, 15.6%, 8.3%, 8.3%, 15.6% and 6.2% of the pools were found positive for Ascaris lumbrioeides, Trichuris trichiura, Hookworm, Enterebious vermicularis eggs and Entamoeba coli, Trichomonas spp Giardia spp. cysts, respectively. Similarly, out of the same number of fly pools, 8.3%, 6.25%, 66.6%, 20.8% and 29.2% of the pools were found positive for Shigella flexner-3, Cholera vibrio, Escherichia coli, Staphylococcus aureus and Pseudomonas, respectively besides many other non-pathogenic bacteria.