حالات الدفتريا المُبلغ عنها (العدد)
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
| الجزائر | 30 | | 7 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | | | 4 | 174 | 125 |
| موريتانيا | 18 | | 0 | | | 0 | | | 0 | 0 | | 0 | 0 | 0 | 0 | 0 | 20 | 40 |
| تونس | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 0 | 0 | 0 | 0 | 0 | 0 |
| ليبيا | 0 | | 0 | | | | | | | | | 0 | | | 0 | 0 | 0 | 0 |
| المغرب | 0 | 0 | | 0 | 0 | 0 | 0 | | | | | 0 | | | | | | |