Flies

Fly is the common name for insects of the order Diptera.Many flies are either harmful as carriers of disease or nuisances because they are voracious biters or bloodsuckers. In Latin America, Africa, and India, blowflies and houseflies are especially abundant; they shuttle between foeces and human food, carrying the agents of cholera, diarrheal disease, dysentery, and gastroenteritis. Some species prefer the eye and transfer the microbes of pinkeye, conjunctivitis, and trachoma from diseased to healthy eyes; others spread yaws, a skin disease, when they feed on cuts and sores.