Travel is now possible between Switzerland and the European Union, EFTA countries, and the United Kingdom.
Since 6 July, it is compulsory to wear a face mask on public transport throughout Switzerland. In addition, travelers from certain regions are legally mandated to go into quarantine.
As of July 6th, anyone entering Switzerland from a country or area with a high risk of infection is legally mandated to go into quarantine for ten days. You will find the list of these countries and further information on the page on Mandatory quarantine for persons arriving in Switzerland.