Abstract
SummaryWe have recently reported on the extensive distribution of salmonellae among the flies of a rural Mexican slaughterhouse. The present study concerns the dispersion of these flies throughout the town and peripheral areas. A total of 543 fluorescein-tagged flies belonging to 6 species were recovered from residential sites, market place, dairy and a neighboring village, up to 3 miles from their origin. Flies spread across town within one day. The ready dispersion of Salmonella-contaminated houseflies, blowflies and other species constitutes a health hazard for the 100,000 inhabitants of the town and outlying communities.
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