Reported cases of paralytic polio from vaccine-derived viruses by country
Number of cases of circulating vaccine-derived poliovirus detected in a given year.
Countries reporting
53
Highest
223 cases
Congo, Democratic Republic of the
Lowest
0 cases
India
Median
0 cases
Years covered
23
2001–2023
Data points
3,956
What the numbers show
Reported cases of paralytic polio from vaccine-derived viruses is currently reported for 53 countries. The highest value is 223 cases in Congo, Democratic Republic of the; the lowest is 0 cases in India.
The median across all reporting countries is 0 cases, and the mean is 9.89 cases.
Over the past decade 5 countries rose and 3 fell. The largest increase was in Nigeria (up 2,075.0%), and the largest decrease in Cameroon (down 100.0%).
Reported cases of paralytic polio from vaccine-derived viruses: full country ranking
| # | Country | Latest | Year | 10-year change | Trend |
|---|---|---|---|---|---|
| 1 | Congo, Democratic Republic of the | 223 cases | 2023 | — | volatile |
| 2 | Nigeria | 87 cases | 2023 | up 2,075.0% | volatile |
| 3 | Chad | 55 cases | 2023 | up 1,733.3% | volatile |
| 4 | Guinea | 47 cases | 2023 | — | volatile |
| 5 | Madagascar | 24 cases | 2023 | — | volatile |
| 6 | Mali | 15 cases | 2023 | — | volatile |
| 7 | Central African Republic | 14 cases | 2023 | — | volatile |
| 8 | Kenya | 8 cases | 2023 | — | volatile |
| 8 | Yemen | 8 cases | 2023 | up 700.0% | volatile |
| 8 | Somalia | 8 cases | 2023 | up 700.0% | volatile |
| 11 | Indonesia | 6 cases | 2023 | — | volatile |
| 11 | Côte d'Ivoire | 6 cases | 2023 | — | volatile |
| 13 | Mozambique | 5 cases | 2023 | — | volatile |
| 14 | South Sudan | 3 cases | 2023 | — | volatile |
| 14 | Burkina Faso | 3 cases | 2023 | — | volatile |
| 14 | Benin | 3 cases | 2023 | — | volatile |
| 17 | Niger | 2 cases | 2023 | up 100.0% | volatile |
| 17 | Tanzania, United Republic of | 2 cases | 2023 | — | volatile |
| 19 | Mauritania | 1 cases | 2023 | — | volatile |
| 19 | Zimbabwe | 1 cases | 2023 | — | volatile |
| 19 | Zambia | 1 cases | 2023 | — | volatile |
| 19 | Israel | 1 cases | 2023 | — | volatile |
| 19 | Burundi | 1 cases | 2023 | — | volatile |
| 24 | Togo | 0 cases | 2023 | — | volatile |
| 24 | Sudan | 0 cases | 2023 | — | volatile |
| 24 | Senegal | 0 cases | 2023 | — | volatile |
| 24 | Sierra Leone | 0 cases | 2023 | — | volatile |
| 24 | Dominican Republic | 0 cases | 2023 | — | volatile |
| 24 | Congo | 0 cases | 2023 | — | volatile |
| 24 | Syria | 0 cases | 2023 | — | volatile |
| 24 | Cameroon | 0 cases | 2023 | down 100.0% | volatile |
| 24 | Papua New Guinea | 0 cases | 2023 | — | volatile |
| 24 | Tajikistan | 0 cases | 2023 | — | volatile |
| 24 | China | 0 cases | 2023 | — | volatile |
| 24 | Ukraine | 0 cases | 2023 | — | volatile |
| 24 | United States | 0 cases | 2023 | — | volatile |
| 24 | Angola | 0 cases | 2023 | — | volatile |
| 24 | Afghanistan | 0 cases | 2023 | down 100.0% | volatile |
| 24 | Philippines | 0 cases | 2023 | — | volatile |
| 24 | Pakistan | 0 cases | 2023 | down 100.0% | volatile |
| 24 | Algeria | 0 cases | 2023 | — | volatile |
| 24 | Eritrea | 0 cases | 2023 | — | volatile |
| 24 | Malaysia | 0 cases | 2023 | — | volatile |
| 24 | Malawi | 0 cases | 2023 | — | volatile |
| 24 | Ethiopia | 0 cases | 2023 | — | volatile |
| 24 | Ghana | 0 cases | 2023 | — | volatile |
| 24 | Myanmar | 0 cases | 2023 | — | volatile |
| 24 | Guinea-Bissau | 0 cases | 2023 | — | volatile |
| 24 | Haiti | 0 cases | 2023 | — | volatile |
| 24 | Liberia | 0 cases | 2023 | — | volatile |
| 24 | Lao People's Democratic Republic | 0 cases | 2023 | — | volatile |
| 24 | Cambodia | 0 cases | 2023 | — | volatile |
| 24 | India | 0 cases | 2023 | — | volatile |
About this data
Number of cases of circulating vaccine-derived poliovirus detected in a given year.