The infected individual has been placed in isolation, the Ticino authorities said on January 1. The person had travelled to Switzerland from South Africa and had tested positive before Christmas.
At least nine people in Switzerland have now been detected with the mutant virus, six with the British version and three with a version detected in South Africa.
On December 20 Switzerland banned flights from the UK and South Africa and imposed an entry ban following reports of the new strain of coronavirus. People who had entered Switzerland from those countries since December 14 were ordered to go into a ten-day quarantine.