The number of new Ebola cases reported in the three worst-hit countries fell to its lowest level since late June , the World Health Organization said Thursday . Guinea , Liberia and Sierra Leone had 99 new cases for week ending July 30 . It 's the first time the number has fallen below 100 in a week since late June .
Guinea , Liberia and Sierra Leone had 99 new cases for week ending July 30 . It 's the first time the number has fallen below 100 in a week since late June .