Number of countries with cases: 5 (Guinea, Liberia, Sierra Leone, Nigeria, Senegal)
Number of cases as of Sept. 16: 4,985
Number of deaths as of Sept. 16: 2,461
Number of new cases, Sept. 7-12: 394
Number of deaths, Sept. 7-12: 174
Of the 4,985 cases (confirmed, probable or suspected) as of Sept. 16, half — 50 per cent — had been reported in the previous 21 days, a clear indication the disease had been spreading rapidly, the UN said.
The disease is spreading most rapidly in Liberia, “driven by a surge of cases in the capital, Monrovia,” the WHO says.