Niger vs Tanzania: Reported versus estimated cases of polio
Niger
2 cases
in 2023
Tanzania
2 cases
in 2023
Niger rank
19th
Tanzania rank
19th
Reported versus estimated cases of polio over time
- Niger
- Tanzania
How they compare
Niger currently reports 2 cases against 2 cases in Tanzania, a difference of 0 cases.
The two have swapped places 7 times across 43 shared years of data; in 1980 it was Niger ahead.
Niger ranks 19th and Tanzania ranks 19th of 199 countries.
Across the 5 decades both report, Niger averaged higher in 4 and Tanzania in 1.
Head to head by decade
| Decade | Niger | Tanzania | Difference | Ahead |
|---|---|---|---|---|
| 1980s | 140.2 cases | 155 cases | 14.8 cases | Tanzania |
| 1990s | 43.56 cases | 12.33 cases | 31.22 cases | Niger |
| 2000s | 16.8 cases | 0 cases | 16.8 cases | Niger |
| 2010s | 2.2 cases | 0 cases | 2.2 cases | Niger |
| 2020s | 11.5 cases | 0.5 cases | 11 cases | Niger |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher reported versus estimated cases of polio, Niger or Tanzania?
- Niger, at 2 cases against 2 cases in Tanzania as of 2023.
- What is the difference in reported versus estimated cases of polio between Niger and Tanzania?
- 0 cases, with Niger ahead.
- How many years of comparable data are there for Niger and Tanzania?
- 43 years are reported by both, from 1980 to 2023.
- How do Niger and Tanzania rank globally for reported versus estimated cases of polio?
- Niger ranks 19th and Tanzania ranks 19th of 199 countries.
- Where does this data come from?
- World Health Organization (2019); World Health Organization (2024) β processed by Our World in Data, published as Reported versus estimated cases of polio. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Sum of wild poliovirus cases and circulating vaccine derived poliovirus cases.