Even a single outbreak can be costly. One such incident in western India in 1994 is said to have drained billions of dollars from the local and world economies.
उदाहरणार्थ, माशा दूषित विष्ठेवरून उडून आपल्या खाण्याच्या अथवा पिण्याच्या पदार्थांवर बसतात.