World Health Organization · Health
Sierra Leone: Number of individuals in the country requiring preventive chemotherapy for onchocerciasis
7.99Mcount · 2025+136.8% since 2015
Number of individuals in the country requiring preventive chemotherapy for onchocerciasis. WHO Global Health Observatory indicator NTD_ONCHEMO. Annual figures for Sierra Leone from 2013 to 2025.
Every year
| Year | Value (count) | Note |
|---|---|---|
| 2025 | 7,990,095 | |
| 2024 | 7,068,534 | |
| 2023 | 7,398,716 | |
| 2022 | 7,362,099 | |
| 2021 | 7,315,339 | |
| 2020 | 7,150,868 | |
| 2019 | 6,230,730 | |
| 2018 | 5,842,131 | |
| 2017 | 5,944,634 | |
| 2016 | 5,333,157 | |
| 2015 | 3,374,326 | |
| 2014 | 3,242,242 | |
| 2013 | 3,175,897 |
Source
Published by World Health Organization. Licence: CC BY-NC-SA 3.0 IGO. Retrieved 2026-11-07.
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Cite or download
World Health Organization (2026). Number of individuals in the country requiring preventive chemotherapy for onchocerciasis. Interva. https://interva.co/dataset/who-ntd-onchemo (accessed 2026-11-08). catalog snapshot 2026-11-07.
Number of individuals in the country requiring preventive chemotherapy for onchocerciasis in other countries
- Angola
- Benin
- Brazil
- Burkina Faso
- Burundi
- Cameroon
- Central African Republic
- Chad
- Congo
- Congo, The Democratic Republic of the
- Côte d'Ivoire
- Equatorial Guinea
- Ethiopia
- Gabon
- Ghana
- Guinea
- Guinea-Bissau
- Liberia
- Malawi
- Mali
- Mozambique
- Nigeria
- Senegal
- South Sudan
- Sudan
- Tanzania, United Republic of
- Togo
- Uganda
- Venezuela, Bolivarian Republic of
- Yemen
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