What is diphtheria?
Diphtheria is a life-threatening bacterial infection of the throat and nose. At the beginning, diphtheria resembles strep throat. However, depending on its course, other organs such as the heart or nervous system can be affected. Despite treatment, about 10% of infections are fatal. In recent decades, the spread of diphtheria has been reduced thanks to vaccination. The vaccine offers a very high protection against severe disease (95%). It enables the immune system to react quickly in case of contact with the pathogen and is therefore recommended to everyone in Switzerland.