Experimental drug is sent to Liberia , official says . People in Cameroon and Nigeria cross borders daily for commercial and personal reasons . Ebola patients fled during Saturday 's attack in Monrovia , police spokesman says . The World Health Organization has declared the outbreak a global emergency and said it will send more than 10,000 health workers into West Africa by next week.
Experimental drug is sent to Liberia , official says . Ebola patients fled during Saturday 's attack in Monrovia , police spokesman says . The World Health Organization has declared the outbreak a global emergency and said it will send more than 10,000 health workers into West Africa by next week.