Number of people treated for river blindness in Tanzania
Tanzania: Number of people treated for river blindness was 5.91 million People in 2024. ◆ Volatile
Number of people treated for river blindness in Tanzania, 2005–2024
Source: World Health Organization – Global Health Observatory (2026) – with minor processing by Our World in Data. Measured in People.
Analysis
In 2024, number of people treated for river blindness in Tanzania stood at 5.91 million People. That is the highest value across all 20 years on record.
The figure is up 12.9% on the previous year and up 77.1% over ten years.
Over the whole period, number of people treated for river blindness in Tanzania peaked at 5.91 million People in 2024 and was at its lowest, 1.24 million People, in 2005.
That places Tanzania 7th out of 33 countries with data for 2024, putting it in the top quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Number of people treated for river blindness in Tanzania, year by year
| Year | People | Change |
|---|---|---|
| 2005 | 1.24 million People | — |
| 2006 | 1.55 million People | +25.1% |
| 2007 | 1.68 million People | +8.4% |
| 2008 | 1.55 million People | -7.7% |
| 2009 | 1.62 million People | +4.0% |
| 2010 | 1.90 million People | +17.6% |
| 2011 | 1.46 million People | -23.4% |
| 2012 | 1.87 million People | +28.6% |
| 2013 | 1.93 million People | +3.0% |
| 2014 | 3.34 million People | +73.1% |
| 2015 | 3.64 million People | +9.1% |
| 2016 | 4.24 million People | +16.4% |
| 2017 | 5.06 million People | +19.5% |
| 2018 | 5.27 million People | +4.0% |
| 2019 | 5.34 million People | +1.5% |
| 2020 | 1.81 million People | -66.1% |
| 2021 | 5.77 million People | +218.5% |
| 2022 | 4.98 million People | -13.6% |
| 2023 | 5.24 million People | +5.0% |
| 2024 | 5.91 million People | +12.9% |
Tanzania compared with similar countries
- Tanzania's 5.91 million People is above the median for lower middle income countries, which is 4.58 million People, 1.3× the median. (12 countries reporting)
- Tanzania's 5.91 million People is above the median for Sub-Saharan Africa, which is 3.06 million People, 1.9× the median. (27 countries reporting)
Biggest year-on-year movements
Years where Number of people treated for river blindness in Tanzania changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 2021 | +218.5% | 1.81 million People | 5.77 million People |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 2000s | 1.53 million People | 1.24 million People | 1.68 million People | 5 |
| 2010s | 3.40 million People | 1.46 million People | 5.34 million People | 10 |
| 2020s | 4.74 million People | 1.81 million People | 5.91 million People | 5 |
Countries ranked near Tanzania
More reference data data for Tanzania
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 0.6405 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 11.44 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 14.14 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 0.7582 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 14.14 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 2.15 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 1.26 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 59.37 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 72.45 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 4.13 (2050)
Frequently asked questions
- What is number of people treated for river blindness in Tanzania?
- Number of people treated for river blindness in Tanzania was 5.91 million People in 2024, according to World Health Organization – Global Health Observatory (2026) – with minor processing by Our World in Data.
- What is the highest number of people treated for river blindness recorded in Tanzania?
- The highest recorded value was 5.91 million People in 2024.
- What is the lowest number of people treated for river blindness recorded in Tanzania?
- The lowest recorded value was 1.24 million People in 2005.
- How does Tanzania rank for number of people treated for river blindness?
- Tanzania ranks 7th out of 33 countries with data for 2024.
- Is number of people treated for river blindness rising or falling in Tanzania?
- Over the last ten years it is up 77.1%. The long-run trend across the full record is volatile.
- Where does this Tanzania data come from?
- The figures come from World Health Organization – Global Health Observatory (2026) – with minor processing by Our World in Data, published as part of Number of people treated for river blindness. Statizoid updates them automatically from the source API.
Download this data
CSV · JSON — 20 observations, free to reuse under CC BY 4.0 (Our World in Data).
About this data
Reported number of people treated with ivermectin for river blindness.