Reported number of individuals treated for onchocerciasis by country
Countries reporting
32
Highest
44.32 million
Congo, Democratic Republic of the
Lowest
0
Sudan
Median
1.80 million
Years covered
20
2005–2024
Data points
511
What the numbers show
Reported number of individuals treated for onchocerciasis is currently reported for 32 countries. The highest value is 44.32 million in Congo, Democratic Republic of the; the lowest is 0 in Sudan.
The median across all reporting countries is 1.80 million, and the mean is 5.38 million.
Over the past decade 22 countries rose and 9 fell. The largest increase was in Yemen (up 1,878.2%), and the largest decrease in Equatorial Guinea (down 100.0%).
Reported number of individuals treated for onchocerciasis: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Congo, Democratic Republic of the | 44.32 million | 2024 | up 70.1% | rising |
| 2 | Nigeria | 24.29 million | 2024 | down 45.3% | rising |
| 3 | Ethiopia | 20.33 million | 2024 | up 108.6% | volatile |
| 4 | Côte d'Ivoire | 17.96 million | 2024 | up 862.9% | volatile |
| 5 | Cameroon | 8.89 million | 2024 | up 23.4% | rising |
| 6 | Guinea | 7.23 million | 2024 | up 655.4% | volatile |
| 7 | Tanzania, United Republic of | 5.91 million | 2024 | up 77.1% | volatile |
| 8 | Mali | 5.51 million | 2024 | up 871.9% | rising |
| 9 | South Sudan | 5.38 million | 2024 | up 262.4% | volatile |
| 10 | Benin | 4.84 million | 2024 | up 63.9% | rising |
| 11 | Chad | 4.74 million | 2024 | up 173.8% | volatile |
| 12 | Ghana | 4.33 million | 2024 | up 28.4% | volatile |
| 13 | Liberia | 3.12 million | 2024 | up 17.7% | rising |
| 14 | Togo | 3.06 million | 2024 | up 13.4% | rising |
| 15 | Angola | 2.68 million | 2024 | up 1,740.9% | volatile |
| 16 | Burundi | 1.94 million | 2024 | up 50.6% | rising |
| 17 | Malawi | 1.66 million | 2024 | down 8.3% | rising |
| 18 | Central African Republic | 1.66 million | 2024 | up 154.6% | rising |
| 19 | Yemen | 1.29 million | 2023 | up 1,878.2% | volatile |
| 20 | Congo | 772,264 | 2024 | up 35.1% | rising |
| 21 | Uganda | 596,500 | 2024 | down 77.8% | falling |
| 22 | Guinea-Bissau | 443,616 | 2024 | up 256.3% | volatile |
| 23 | Sierra Leone | 414,286 | 2024 | down 87.9% | rising |
| 24 | Senegal | 327,943 | 2022 | up 172.3% | volatile |
| 25 | Burkina Faso | 270,762 | 2024 | up 34.0% | rising |
| 26 | Guatemala | 105,606 | 2011 | down 35.9% | falling |
| 27 | Mexico | 102,227 | 2011 | down 29.3% | falling |
| 28 | Ecuador | 15,425 | 2009 | — | falling |
| 29 | Brazil | 11,514 | 2024 | up 16.8% | rising |
| 30 | Venezuela, Bolivarian Republic of | 8,958 | 2024 | down 8.7% | volatile |
| 31 | Equatorial Guinea | 0 | 2019 | down 100.0% | volatile |
| 31 | Sudan | 0 | 2024 | down 100.0% | volatile |