As of Friday, the World Health Organization (WHO) is reporting 3,944 probable, confirmed, and suspected cases in Guinea, Liberia, and Sierra Leone, including 2,097 fatalities. The data was released in the 2nd Ebola Response Roadmap Situation Report.
In Guinea, a marked increase in the past week shows more than 100 cases newly reported, mainly in the epicentre of the outbreak (Macenta, Gueckedou), as well as in Dubreka, a district close to Conakry.
Liberia continues to be the most affected country, reporting more than 200 cases a week for the past three weeks. Transmission remains very intense in Lofa county, as well as in Montserrado county, which includes the capital, Monrovia.
In the last two weeks, the incidence in Sierra Leone has remained very high, with more than 150 cases reported each week. Kenema and Kailahun show active, persistent transmission, while the incidence in the capital, Freetown, continues to increase.
The WHO notes the outbreak continues to expand geographically. For the first time since the outbreak began, the majority of cases (55.3 %) have been reported outside Gueckedou and Macenta (Guinea); Lofa (Liberia), and Kenema and Kailahun (Sierra Leone). Three districts in Guinea have been affected for the first time.
The outbreak continues to escalate. Most cases are concentrated in only a few places: more than 80% of cases have occurred in 9 out of the 42 districts in Guinea, Liberia, and Sierra Leone that have reported cases (Lofa, Kailahun, Kenema, Gueckedou, Montserrado, Macenta, Conakry, Margibi, and Nimba). The overall case fatality rate (ratio of deaths to cases) is 53%. It ranges from 39% in Sierra Leone to 64% in Guinea.