Restrictions preventing people from leaving home unless it is essential have been introduced in Northern Ireland. People can be ordered to return to their homes by police as part of measures agreed by Stormont ministers.
The health service is under severe pressure, with hospitals at full capacity and cancer surgery among operations cancelled in Belfast.
Official statisticians have said 115 deaths involving Covid-19 occurred in the week of 19-25 December, with a further 91 deaths occurring from 26 December to 1 January.
The total Covid-19 related deaths figure has now reached 1,895, the Northern Ireland Statistics and Research Agency said. The weekday traffic volume has already fallen by around 58%.