Ellen Johnson Sirleaf
Liberia declared Ebola-free, but outbreak continues over border
May 09, 2015 06:46 PM EDT
U.S. pledges 3,000 troops to fight Ebola; experts say more needed
Sep 16, 2014 12:23 PM EDT
May 09, 2015 06:46 PM EDT
Sep 16, 2014 12:23 PM EDT