People set fire to an Ebola treatment centre in a town at the heart of the outbreak in eastern DR Congo on Thursday after being stopped from retrieving the body of a local man, a witness and a senior police officer said, as fear and anger grow over a health crisis that doctors are struggling to contain.The arson attack in Rwampara reflects the challenges of health workers trying to curb a rare Ebola virus by using stringent measures that might clash with local customs, such as burial rites. The...