Ebola Outbreak in depth

- Latest update: November 5, 2014 - 

This page contains a detailed dataset of WHO reported cases and deaths during the 2014 EVD outbreak, starting from the month August 2014, when this information became available. Since August 1, the WHO reported regular updates with detailed figures, for Guinea, Liberia and Sierra Leone (the cases in Nigeria, Senegal, Spain and the US are considered initial and localized and are therefore not included in the timeline analysis). When interpreting the information below please keep the following in mind:

"The total number of cases is subject to change due to ongoing reclassification, retrospective investigation, and availability of laboratory results. Data reported in the Disease Outbreak News are based on official information reported by Ministries of Health." (WHO, 2014)

Total cases per country - latest status



Total deaths per country

Latest data from November 2014. Use the filter to show detailed figures for Guinea, Liberia or Sierra Leone.

Response efforts

Available beds

Latest status available EVD bed capacity



International aid committed

International aid committed (US$)

"Total (cumulative aid)" refers to the combined amount of US$ committed to Guinea, Liberia, Sierra Leone. Source: Financial Tracking Service.

International aid committed (US$)

Showing the amount in US$ committed or contributed by the international community as specified for the three countries with widespread transmission. This does not include aid committed to the unspecified West African region. Source: Financial Tracking Service.

All countries combined 

Guinea, Liberia, Sierra Leone

Confirmed and total cases

Total cases include the probable and suspect cases. The number of confirmed cases has been increasingly lagging the total cases in August but is slowly picking up since September.

Timeline of confirmed cases and total cases



Total cases mapped

Showing total cases for countries with widespread transmission.

Confirmed and total deaths

Total deaths include the probable and suspect deaths. Like with the number of confirmed cases, the confirmed deaths trail the total deaths but is picking up since September.

Timeline of confirmed deaths and total deaths



Total deaths mapped

Showing total deaths for countries with widespread transmission.

Percentage of confirmed cases and deaths

Timeline of the percentage of confirmed cases and deaths



Percentage confirmed cases mapped 

Showing percentage of confirmed cases for countries with widespread transmission.

New cases and deaths

August 2014 saw a total of 2245 new cases and 1015 new deaths, at that time representing over half of total cases and deaths reported since March 2014. 

On October 29, the WHO update reported a "marked increase in the cumulative total number of cases compared with the situation report of 22 October results ... [These] additional 3,792 cases have occurred throughout the epidemic period, not only since 22 October."

Timeline of new cases and deaths

Negative number of new deaths or cases are the result of ongoing reclassifications, retrospective investigation and availability of laboratory results

New cases mapped

Showing new cases for countries with widespread transmission.

Fatality percentage (total deaths/total cases)

Timeline of fatality percentage  



Fatality percentage mapped

Showing fatality percentage for countries with widespread transmission.

Healthcare workers with EVD

Since the September 12 WHO update of the Ebola outbreak, there are figures available for the number of cases and deaths under healthcare workers in Guinea, Liberia and Sierra Leone.

Cases and deaths healthcare workers all countries

Data available since September 12, 2014

Cases healthcare workers mapped

Showing cases of infected healthcare workers for countries with widespread transmission

Country per country

Confirmed and total cases per country

Since mid-August the total number of reported cases in Liberia has been growing exponentially and really outpaced the total cases in Guinea and Sierra Leone.

Timeline of total cases per country



Confirmed cases per country

When looking at the confirmed cases only, Liberia has been lagging (meaning the majority of cases in Liberia are identified as probable or suspect). On average the percentage of confirmed cases of total cases for Liberia has been below 30% since August; for Guinea it has been around 75% and for Sierra Leone around 90%. Liberia's percentage of confirmed cases has been rising since September though.

Timeline of confirmed cases



Timeline of percentages of confirmed cases 



Liberia: confirmed cases vs. total cases

While the total cases in Liberia nearly tripled in August, its confirmed cases did not increase in the same pace. By August 26, Liberia's confirmed cases only made up 23% of all reported cases (a low point so far), but this percentage has been picking up some since September.





New cases per country

The number of new cases were highest in Liberia for all reported days in August, often matching the combined numbers of Guinea and Sierra Leone. Total new cases in August were 299 for Guinea, 642 for Sierra Leone and 1.307 for Liberia. 

Timeline of new cases since August 2014

Negative number of new deaths or cases are the result of ongoing reclassifications, retrospective investigation and availability of laboratory results

Cases in the past 21 days

Since September, the WHO provides information about the number of new cases and deaths within the past 21 days (the incubation period from time of infection to symptoms is 2 to 21 days).

Timeline of total cases in the past 21 days



Explore the data on cases in the past 21 days per country here, for Guinea, Liberia and Sierra Leone.

Percentage of cases in the past 21 days for each country



Confirmed and total deaths per country



Timeline of confirmed deaths per country



Liberia: confirmed deaths vs. total deaths

Like with the confirmed cases, Liberia's confirmed deaths lag the total reported deaths and this lagging has only increased in August: Liberia's confirmed deaths made up 46% of the country's total reported deaths in the beginning of the month, but this percentage had dropped to 31% by August 31. Since September the percentage of confirmed deaths in Liberia has been increasing though.





While the total death count was highest in Guinea at the start of August (358 as of August 1), Liberia's total death count has almost three-folded during the month August (rising to 871 by August 31) and increased to grow exponentially into September but saw a first drop after the first week of September.

Timeline of total deaths per country



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