Epidemiological update: outbreak of Ebola virus disease in

West Africa

EPIDEMIOLOGY Incidence, transmission, distribution, and control of diseases in a population.

Transmission: Person to personRitual washing of Ebola victims at funerals Nosocomial TransmissionTransmission from animals

December 2013 November 17, 201414 415 probable & suspected cases of Ebola virus disease (EVD) in six affected countries:Guinea Sierra Leone NigeriaLiberia Spain SenegalMali US 5 177(reported deaths)

Distribution of cases Countries with widespread and intense transmission:Guinea: 1 919 cases and 1 166 deaths as of 11/11/14Liberia: 6 878 cases and 2 812 deaths as of 11/10/14Sierra Leone: 5 586 cases and 1 187 deaths as of 11/14/14

Ebola virus epidemic in West Africa

Countries with an initial case or cases, or with localized transmission:Mali (5 confirmed, 1 probable case, including 4 deaths)United States (4 confirmed cases, including 1 death)Spain (1 case, 0 deaths)Nigeria (20 cases and 8 deaths) *Nigeria (was declared Ebola free on 10/19/14)Senegal (1 confirmed imported case) *Senegal was declared Ebola free on 10/17/14)

01/07/15

Data up to 15 March

Ebola virus disease outbreak in West Africa (December 2013 to present)

Status: Confirmed, Ongoing Transmission

-WHO