Scotland is facing a “tsunami” of Omicron cases, with the variant likely to replace Delta as the dominant form of the virus within days, Nicola Sturgeon has warned.
The first minister said the 110 cases that have been recorded in the country are only the “tip of the iceberg”.
And she predicted that a new wave of the pandemic was about to begin.
She also announced changes to self-isolation guidelines and urged people to cancel work Christmas parties.
Ms Sturgeon said that, from tomorrow, all household contacts of any Covid cases should isolate for 10 days, regardless of vaccination status and even if they initially get a negative PCR test.
Non-household contacts can leave isolation if they have had a negative PCR test and have had two vaccine doses.
The first minister said early action was needed, with Omicron cases rising “exponentially” in recent days, and that she could not rule out further measures having to be introduced.