Samples from wastewater around Zurich, Lausanne and another “unspecified winter sports area” in Switzerland reports Austria’s Kronen Zeitung.
The findings illustrate that despite the Swiss government’s effort to stop flights from the UK and to require quarantine for arrivals, the virus had already made its way to Switzerland.
The ETH researchers looked at 48 wastewater samples from across the country.
Previously, the first time the mutation of the virus had been detected in Switzerland was on the 24th of December.
What do we know about the mutation?
Just before Christmas, a mutation of coronavirus first detected in Great Britain and South Africa led to flights being banned and new entry restrictions across Europe.
The variant was first detected in Switzerland on Christmas Eve among two passengers who were UK residents and had recently arrived in Switzerland.
On Sunday, January 3rd, Geneva health authorities said it was likely community transmission was already taking place in Switzerland.
As of January 6th, there were an expected 28 cases of the variant in Switzerland.