Ebola Epidemic in Western Africa

Monthly New Cases and Deaths from Ebola in Western Africa

The Ebola Virus and it’s possible spread to the US and elsewhere through air travel was a major concern during the 2014 outbreak. The primary locus of the epidemic was in the West African countries of Guinea, Liberia and Sierra Leone. The US Center for Disease Control (CDC) maintains a tally of the total number of cases of the disease in these three countries at their website. The Tepee graphics were obtained for the CDC data to illustrate how the Ebola epidemic flared and receded in these countries over the period from April 2014 to October 2015. A juxtaposition of the new cases and deaths data is in this document.

New Cases of Ebola in West Africa

The Table below provides the number of new Cases of Ebola in the three West African Countries inferred from the CDC data. The Tepee Graphic below the table provides an intuitive visualization of this data. The length of each horizontal line represents the row total – the total number of new cases in each month over the three countries. The segments of each horizontal line represents the total at each month in each of the countries as indicated by the colors in the legend. The number of cases in any month for any country can be read off from the length of the associated segment using the scale provided. The area of the colors are  proportional to the column totals – the total number of cases in each country.  The disease flared rapidly from April to October 2014 and it has taken about a year to contain it.

Month New cases Monthly, Guinea New Cases Monthly, Liberia New Cases Monthly, Sierra Leone Row Sum
OCT 2015 3 0 156 159
SEP 2015 15 0 308 323
AUG 2015 9 0 216 225
JUL 2015 36 6 258 300
JUN 2015 93 0 302 395
MAY 2015 74 344 429 847
APR 2015 86 610 424 1120
MAR 2015 337 474 673 1484
FEB 2015 238 616 783 1637
JAN 2015 238 604 1072 1914
DEC 2014 552 383 2337 3272
NOV 2014 488 1100 1771 3359
OCT 2014 593 3077 3317 6987
SEP 2014 426 2080 995 3501
AUG 2014 188 1049 493 1730
JUL 2014 70 278 375 723
JUN 2014 109 39 142 290
MAY 2014 60 0 16 76
APR 2014 109 4 0 113
COL SUM 3724 10664 14067 28455

 

Ebola Deaths in West Africa

Data similar to that for the new cases can be derived from the CDC website for the deaths by country for each month. The data and the corresponding Tepee graphic is provided below. Interpretation is similar to that for the graphic for new cases.

Month Monthly Deaths, Guinea Monthly Deaths, Liberia Monthly Deaths, Sierra Leone Row Sum
OCT 2015 3 0 0 3
SEP 2015 5 0 2 7
AUG 2015 7 0 2 9
JUL 2015 31 2 18 51
JUN 2015 61 0 21 82
MAY 2015 46 198 11 255
APR 2015 69 276 102 447
MAR 2015 223 295 338 856
FEB 2015 181 351 262 794
JAN 2015 202 263 441 906
DEC 2014 396 278 1228 1902
NOV 2014 294 732 20 1046
OCT 2014 370 583 905 1858
SEP 2014 218 1136 183 1537
AUG 2014 91 538 189 818
JUL 2014 69 122 199 390
JUN 2014 84 25 29 138
MAY 2014 40 0 5 45
APR 2014 76 3 0 79
COL Sum 2466 4802 3955 11223