From BBC Scotland an hour ago:
An enhanced contact tracing effort is under way after the Brazilian variant of Covid-19 was detected in Scotland. Three Scottish residents tested positive for the new strain after flying into Aberdeen from Brazil, via Paris and London. Other passengers who were on the same flight from London are now being contacted. Experts believe this variant (P1) – first detected in northern Brazil in January – could be more contagious. Three other cases have also been detected in England, but they are not linked to the Scottish cases. Officials are still trying to track down one of those who tested positive for the new variant in England. Jillian Evans, head of health intelligence at NHS Grampian, said the three Scottish travellers had arrived in Aberdeen in early February, before new rules on hotel quarantine came into force. She told BBC Radio’s Good Morning Scotland programme they had isolated together for 10 days after arrival in accommodation provided by their employer. They tested positive while in isolation.
This is the inevitable consequence of a quarantine system that cannot work. The Institute for Government is clear on this:
The government has said the purpose of this policy is to “reduce the risk of a new variant of the virus being transmitted from someone coming into the UK” and to “protect the public and our world-class vaccination programme” from variants against which existing vaccines might prove to be ineffective. However, it has not been clear about whether it wants merely to reduce the number of infected travellers mixing in the community – and if so, by how much – or if its goal is to stop variants of concern entering the country altogether. It is difficult to see how a selective quarantine system could achieve the latter. As SAGE has pointed out, there would be a time lag between a new variant arising and the government detecting it and shutting down travel from the relevant country.
Scotland effective test, trace and isolate system has probably shut this one down, but it will not be the last.