Travel – people moving freely across the porous border and travellers arriving at ports and airports – has been a contentious issue since the pandemic began.
The very first case of the virus on the island of Ireland involved a person who came to Dublin Airport and then crossed into Northern Ireland.
As the Covid-19 challenge intensifies and the administrations in Dublin and Stormont admit really difficult days are ahead, there are some indications of policy shifts that might address some of the travel problems.
In the south, the tactic of imposing a 5km travel limit has been used a number of times. If the incidence of the disease continues to increase, increasing the limit to 2km is an option.