Дифтерия, случаи заболевания (количество)
| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 |
| Исландия | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Швеция | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 0 | 1 | 4 | 0 | 0 | 4 | 0 | 4 | 4 | 3 |
| Финляндия | 0 | | 0 | 0 | 0 | | 0 | | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Норвегия | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 0 | 1 | 1 | 2 | 0 | 0 | 8 | 4 |
| Дания | 0 | 0 | 0 | 0 | 0 | 0 | 0 | | 1 | | 1 | 0 | 0 | 1 | 1 | 0 | 0 |