NEW : World Health Organization pulls workers from Kailahun post in Sierra Leone . The World Health Organization says 120 health care workers have died in the outbreak . `` They are exhausted from many weeks of heroic work , helping patients infected with Ebola . Quarantine on West Point slum was imposed after rioters looted a treatment center . The center is slowly being rebuilt , the only shelter for the area 's frightened residents .
NEW : World Health Organization pulls workers from Kailahun post in Sierra Leone . The World Health Organization says 120 health care workers have died in the outbreak . Quarantine on West Point slum was imposed after rioters looted a treatment center . The center is slowly being rebuilt , the only shelter for the area 's frightened residents .