How does feeding habits of housefly contribute to its ability to spreading disease?

Answer 1

In many countries people go in open spaces for defecation. This is a common practice in villages of India. Housefly sits on the fecal matter. Thousands of microorganisms get entangled on the legs of the housefly. Housefly has got fine hairlike projections on it's legs. This facilitate the trapping of microorganisms on the legs of housefly. This housefly may go and sit on the food that you are eating. The disease causing microorganisms are thus transmitted this way. Ova of the worms and cysts of the pathogenic species of Amoeba are also transmitted in the same way. Thus housefly is important agent to transmit the infections that are transmitted by fecal-oral route.