Page 81 - GPHS Environmental Public Health Standards (Foundation of Public Health) v1
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The facts about pest contamination (Cont.)
FLIES. Capable of contaminating food and transferring more than 100 pathogens, including
malaria, Salmonella, and tuberculosis, common house flies can quickly reproduce in large numbers,
leading to large populations within a facility if not identified and effectively controlled.
Signs of an infestation include:
➢ Sightings. The presence of the flies themselves, usually near decaying food or garbage.
➢ Larvae. Flies can be seen crawling out of their breeding material as they pupate.
➢ Buzzing. An audible sound resulted from their two wings beating together.
