Medical staff wear protective clothes during an exercise to prepare the service in case of an Ebola virus outbreak on October 24, 2014 at the SAMU headquarters in Paris. European Union leaders agreed to boost aid to combat the deadly Ebola virus in west Africa to one billion euros ($1.26 billion), EU president Herman Van Rompuy said. So far, there have been some 10,000 cases but experts have warned that infections could soar to 10,000 per week by early December -- a terrifying prospect for a disease with a death rate running at 70 percent. AFP PHOTO / STEPHANE DE SAKUTIN        (Photo credit should read STEPHANE DE SAKUTIN/AFP/Getty Images)