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The total number of probable and confirmed cases in the current outbreak of Ebola virus disease (EVD) in the four affected countries as reported by the respective Ministries of Health of Guinea, Liberia, Nigeria, and Sierra Leone is 3,069, with 1,552 deaths.
The outbreak continues to accelerate. More than 40 percent of the total number of cases have occurred within the past 21 days. However, most cases are concentrated in only a few localities.
The overall case fatality rate is 52 percent. It ranges from 42 percent in Sierra Leone to 66 percent in Guinea.
A full understanding of the outbreak that will lead to improved response requires detailed analysis of exactly where transmission is occurring (by district level) and of time trends. This analysis is ongoing. Preliminary results show that cases are still concentrated (62 percent of all reported cases since the beginning of the outbreak) in the epicentre of the outbreak in Gueckedou (Guinea); Lofa (Liberia), where cases continue to rise; and Kenema and Kailahun (Sierra Leone). Capital cities are of particular concern, owing to their population density and repercussions for travel and trade.
The World Health Organization (WHO) and its partners are on the ground establishing Ebola treatment centers and strengthening capacity for laboratory testing, contact tracing, social mobilization, safe burials, and non-Ebola health care.
WHO continues to monitor for reports of rumored or suspected cases from countries around the world and systematic verification of these cases is ongoing. Countries are encouraged to continue engaging in active surveillance and preparedness activities. Cases of EVD have been reported from the Democratic Republic of Congo. The cases in DRC are not related to the outbreak in West Africa. Outside of the four affected countries in West Africa and DRC, no new cases have been confirmed in other countries.
WHO does not recommend any travel or trade restrictions be applied except in cases where individuals have been confirmed or are suspected of being infected with EVD or where individuals have had contact with cases of EVD. (Contacts do not include properly-protected healthcare workers and laboratory staff.)