Outbreak of Ebola in Guinea, Liberia, and Sierra Leone

Guinea at a Glance

• Suspected and Confirmed Case Count: 472
• Suspected Case Deaths: 346
• Laboratory Confirmed Cases: 337

Liberia at a Glance

• Suspected and Confirmed Case Count: 391
• Suspected Case Deaths: 227
• Laboratory Confirmed Cases: 109

Sierra Leone at a Glance

• Suspected and Confirmed Case Count: 574
• Suspected Case Deaths: 252
• Laboratory Confirmed Cases: 507

Nigeria at a Glance

• Suspected and Confirmed Case Count: 3
• Suspected Case Deaths: 1
• Laboratory Confirmed Cases: 0

Highlights

• July 30, 2014, the Guinea Ministry of Health announced a total of 472 suspect and confirmed cases of Ebola virus disease (EVD), including 346 fatal cases.
• Affected districts include Conakry, Guéckédou, Macenta, Kissidougou, Dabola, Djingaraye, Télimélé, Boffa, Kouroussa, Dubreka, Fria, Siguiri, Pita; several are no longer active areas of EVD transmission (see map).
• 337 cases across Guinea have been confirmed by laboratory testing to be positive for Ebola virus infection.
• In Guinea’s capital city, Conakry, 91 suspect cases have been reported to meet the clinical definition for EVD, including 41 fatal cases.
• July 30, 2014, the Ministry of Health and Sanitation of Sierra Leone and WHO reported a cumulative total of 574 suspect and confirmed cases, including 507 laboratory confirmations and 233 reported fatal cases.
• Cases have been reported from 11 Sierra Leone districts.
• July 30, 2014, the Ministry of Health and Social Welfare of Liberia and WHO have reported 391 suspect and confirmed EHF cases (including 109 laboratory confirmations) and 227reported fatalities.
• July 30, 2014, the Nigerian Ministry of Health and WHO reported 3 suspect and probable cases and 1 fatal probable case.
• Genetic analysis of the virus indicates that it is closely related (97% identical) to variants of Ebola virus (species Zaire ebolavirus) identified earlier in the Democratic Republic of the Congo and Gabon (Baize et al. 2014).
• The Guinean Ministry of Health, the Ministry of Health and Sanitation of Sierra Leone, the Ministry of Health and Social Welfare of Liberia, and the Nigerian Ministry of Health are working with national and international partners to investigate and respond to the outbreak.

Click map to view larger version.

Click graph to view larger version.

RESOURCES

August 3, 2014

Outbreak Update

The World Health Organization, in partnership with the Ministries of Health in Guinea, Sierra Leone, Liberia, and Nigeria announced a cumulative total of 1440 suspect and confirmed cases of Ebola virus disease (EVD) and 826 deaths, as of July 30, 2014. Of the 1440 clinical cases, 953 cases have been laboratory confirmed for Ebola virus infection.
In Guinea, 472 cases, including 346 fatal cases and 337 laboratory confirmations of EVD, were reported by the Ministry of Health of Guinea and WHO as of July 30, 2014. Active surveillance continues in Conakry, Guéckédou, Boffa, Pita, Siguiri, and Kourourssa Districts.
In Sierra Leone, WHO and the Ministry of Health and Sanitation of Sierra Leone reported a cumulative total of 574 suspect and confirmed cases of EHF as of July 30, 2014. Of these 574, 507 cases have been laboratory confirmed and 252 were fatal. Districts reporting clinical EVD patients include Kailahun, Kenema, Kambia, Port Loko, Bo and Western Area, which includes the capital, Freetown. More recently, Tonkolili, Bambali, Moyamba, and Bonthe Districts have also reported confirmed cases of EVD. Reports, investigations, and testing of suspect cases continue across the country.
As of July 30, 2014, the Ministry of Health and Social Welfare of Liberia and WHO reported 391 clinical cases of EVD, including 109laboratory confirmations and 227 fatal cases. Suspect and confirmed cases have been reported from Lofa, Montserado, Margibi, Bomi, Bong, Nimba, RiverCess, and Grand Cape Mount Counties. Laboratory testing is being conducted in Monrovia.
In Nigeria, WHO and the Nigerian Ministry of Health reported one probable fatal case and 2 suspect cases as of July 30, 2014.
CDC is in regular communication with all of the Ministries of Health (MOH), WHO, MSF, and other partners regarding the outbreak. Currently CDC has personnel in all four countries assisting the respective MOHs and the WHO-led international response to this Ebola outbreak.
Based on reports from the Ministry of Heath of Guinea, the Ministry of Health and Sanitation of Sierra Leone, the Ministry of Health and Social Welfare of Liberia, the Ministry of Health of Nigeria, and WHO