Last updated: September 1, 2011 - 4:14pm
The year 2010 was a very bad one for Haiti. It started with an earthquake that killed over 300,000 people, mostly in the crowded capital of Port-au-Prince. After that, cholera originating in a U.N. camp broke out in a northern province and eventually spread to the city. But public health researchers learned something useful from the tragedy: Cell phones can help stem an unfolding epidemic and funnel aid to the needy.