Conakry

In  its weekly epidemiologicpidemiologic profile of the outbreak Wednesday, the World Health Organization (WHO) said Ebola activity in Guinea and Sierra Leone has become more intense and widespread since May 10, when the region saw cases hit a 10-month low.

Last week the two countries reported 25 new lab-confirmed cases, 13 in Guinea and 12 in Sierra Leone. The number is up from 12 reported the week before.

Overall, the total of confirmed, probable, and suspected cases in the two countries and Liberia—which is now Ebola free—has risen to 27,145, including 11,147 deaths, the WHO said.