From March 22, Switzerland introduces a mandatory 10-day quarantine for those arriving from Bulgaria

As of March 22 this year, Bulgaria has been added to the list of countries at risk and regions from which Swiss 
and foreign nationals are subject to mandatory quarantine, regardless of which vehicle they arrive with. 

In addition to the negative AKP test, citizens arriving from Bulgaria will be placed in a mandatory 10-day quarantine, which
 can be canceled no earlier than the 7th day, upon presentation of a second negative test.