Anyone required to self-isolate after coming into contact with someone who has Covid-19 - or on return from a trip overseas - will now only need to isolate for 10 days, instead of 14.
The new rule will come into force from Monday, following a review of the latest evidence by the UK's four chief medical officers.
The rules will be as follows:
- Someone who, from December 14, has been contacted through Test and Protect – including by the app – or their local health board and have been notified to self-isolate, should do so for 10 days.
- Someone who, from December 14 is required to quarantine following arrival into Scotland from overseas, should self-isolate for a period of 10 days.
- Someone who was previously instructed to self-isolate will, from December 14, be able to stop self-isolating 10 days from when they were first notified to do so.
- Close contacts include members of the same household who test positive for Covid-19 - from December 14, they will now only need to isolate for 10 days, rather than 14.
Cabinet Secretary for Health, Jeane Freeman, said: "Self-isolation, both for contacts identified by Test and Protect and through the foreign travel quarantine requirements, is critical to protecting people and reducing the spread of Covid-19.
"Following their review of the latest evidence and having considered the joint recommendation of UK CMOs from all four nations, we have agreed to reduce the required isolation period from 14 to 10 days.
"While self-isolation may be for a shorter period, it remains vital that everyone who is required to do so remains at their home or other named address for this time. Only by doing this can we break the chain of transmission of the virus, protect the NHS and save lives."
In their joint statement, the four UK CMOs said: "Self-isolation is essential to reducing the spread of Covid as it breaks the chains of transmission.
"After reviewing the evidence, we are now confident that we can reduce the number of days that contacts self-isolate from 14 days to 10 days. People who return from countries which are not on the travel corridor list should also self-isolate for 10 days instead of 14 days.
"People who test positive should continue to self-isolate for 10 days from onset of symptoms or 10 days from point of taking a positive test if asymptomatic. We urge everyone to self-isolate when appropriate, it will save lives."