The dying at the tin-roofed clinic in the rural Kono district of Sierra Leone comes at a ruthless pace. In the first two weeks of October, 20 out of the 22 patients seeking treatment for Ebola died. That fatality rate, high even by the lethal standards of Ebola, could easily be brought down, says Dan Kelly, an infectious-disease doctor who is currently in Kono with the Wellbody Alliance, a medical nonprofit organisation he set up eight years ago.