The vast majority of people in Switzerland how have antibodies to fight Covid.
The Graubünden cantonal doctor, Marina Jamnicki, estimates 98% of the population have been exposed to the virus, either through vaccination or infection.
But the recommendation that those at risk maintain their level of vaccination by getting a booster still stands.
She says in her canton the hospitals are coping well and there hasn’t been a corona death since the winter, and that was someone in their eighties.