"Controls will be performed at Switzerland's borders to prevent the influx of foreigners from the most affected countries, particularly Italy. Sommaruga said that Schengen agreement allows individual members to take these restrictive measures in special situations. Exceptions will be made for Swiss citizens and permanent residents returning to Switzerland, as well as foreigners employed in Switzerland."
As you can probably imagine, the uphill ski from the town to the start of any of the routes without using a lift is a brainless, soul destroying grind. Skinning to Furi is something you do once and vow never to do again. It's not steep, it's just boring as hell.
https://www.thelocal.ch/20200313/switzerland-closes-schools-and-offers-in-aid-to-businesses-over-virus
"Controls will be performed at Switzerland's borders to prevent the influx of foreigners from the most affected countries, particularly Italy. Sommaruga said that Schengen agreement allows individual members to take these restrictive measures in special situations. Exceptions will be made for Swiss citizens and permanent residents returning to Switzerland, as well as foreigners employed in Switzerland."
https://www.zermatt.ch/en/liveticker for the stuff about ski resort closing (you can still ski tour, but meh)