The Bill and Melinda Gates Foundation, Western countries and drug companies pledged fresh support to wipe out diseases in tropical areas.

Scientists have found a single class of drugs that can kill the parasites responsible for three tropical diseases that affect millions in Africa, Asia and Latin America.

Drug companies have brought a host of expensive new medicines to market in the United States and Europe this year, figures show, another bumper haul for an industry often accused of over-charging. Drug prices are set to be a major issue in the run-up to the U.S. presidential election next year, with Democratic candidate Hillary […]