The immunity pass could be used to get permission to go to work.

- Many people are needed in their professions, and you also need to get your finances started. But they also talk, for example, about socializing and traveling, says Emma Frans, researcher in epidemiology at Karolinska Institutet.

She does not believe that immunity passes would be completely risk-free.

- It can be an incentive for people to actually go out and get infected.