Ebola may soon be a "preventable and treatable" disease after a trial of two drugs showed significantly improved survival rates, scientists have said. Four drugs were trialled on patients in the Democratic Republic of Congo, where there is a major outbreak of the virus. More than 90% of infected people can survive if treated early with the most effective drugs, the research showed. The drugs will now be used to treat all patients with the disease in DR Congo, according to health officials. On Tuesday, two people cured of Ebola using the experimental drugs were released from a treatment centre...