Swiss authorities managed to track down 420 visitors from the UK, who were told go into quarantine.
However, according to a report in the Swiss newspaper SonntagsZeitung, at least half of these tourists fled the resort in “clandestine” fashion, with some later reporting back to their hotels from France.
“Many of them stayed in quarantine for a day before setting off under the cover of darkness,” said Jean-Marc Sandoz, communications officer for the Bagnes municipality.