Telegraph reported. The letter instructs frontline workers to isolate coronavirus patients who have recently returned from Denmark, and to treat them in specialist centres and have them gene-tested.Staff were warned the new virus strain appeared to show “less sensitivity for neutralising antibodies” and therefore greater resistance to a vaccine, the report added.Freight drivers who have recently travelled through Denmark and are not residents of the UK will be turned away from the British border to prevent a UK outbreaks of the mink related strain, it has been said.Passenger planes and ships travelling from Denmark, and any accompanying freight, will not be allowed to dock at English ports under the new rules which came into force at 4am on.