For the first time in 19 months there were no Ebola Virus Disease (EVD) cases reported in any of the three West African countries during the week ending Oct. 4.
Case incidence has remained below 10 confirmed cases per week for 11 consecutive weeks. Over the same period, transmission of the virus has been geographically confined to several small areas in western Guinea and Sierra Leone, marking a transition to a distinct, third phase of the epidemic.
The 4 most recent cases in Guinea, which were reported on 26 and 27 September from two villages in the sub-prefecture of Kaliah, Forecariah, were infected by an unregistered contact of a probable case linked to the Ratoma chain of transmission.
Sierra Leone reported no confirmed cases for the third consecutive week.
Since the beginning of the outbreak there have been a total of 28,421 reported confirmed, probable, and suspected cases of EVD in Guinea, Liberia, and Sierra Leone up to 4 October, with 11,297 reported deaths (this total includes reported deaths among probable and suspected cases, although outcomes for many cases are unknown).