2014-07-23T134638Z_1_LYNXMPEA6M0L1_RTROPTP_2_HEALTH-EBOLA-AFRICAThe 39-year-old Sheik Umar Khan, hailed as a “national hero” by the health ministry, was leading the fight to control an outbreak that has killed 206 people in the West African country. There is no cure or vaccine for Ebola which can kill up to 90 percent of those infected, although the mortality rate of the current outbreak is lower at around 60 percent. Across Guinea, Liberia and Sierra Leone, 632 people have died from the illness, according to the latest World Health Organisation (WHO) data, putting great strain on the health systems of some of Africa’s poorest countries. More