On 18 March 2020, the Swiss Federal Council decided, that entry at the Schengen external borders is generally prohibited with few exceptions. Switzerland follows the practice of the other Schengen states. Until 15th June 2020, Switzerland will also no longer issue Schengen visas. National visas will also only be issued in exceptional cases, for example to family members of Swiss citizens with a right of presence in Switzerland who require a visa and to specialists from the health sector.
For additional information, please consult the webpage of the State Secretariat for Migration SEM.