THE DUP leader yesterday revealed he has tested positive for Covid-19.
Posting on Twitter, Sir Jeffrey Donaldson said he had received a positive result from a PCR test.
"When I returned from London on Friday evening I felt a cold coming on but it has been getting worse," he said.
"PCR test has now come back positive. Close contacts will be notified.
"Thankfully I received my booster two weeks ago.
"The importance of being vaccinated cannot be overstated."
Sir Jeffrey also said he would continue with his work online, including further discussions about the Irish Sea border.
"Work still goes on even though I'm a bit croaky," he added.
"Sore throat is most uncomfortable symptom.
"I will still be having a virtual meeting with the Foreign Secretary (Liz Truss) this afternoon on the need to remove the Irish Sea border which is reducing accessibility to medicines etc."
Stormont politicians were among those to respond on Twitter.
Sinn Féin deputy first minister Michelle O'Neill said: "Wishing you a speedy recovery Jeffrey. Take care", while SDLP infrastructure minister Nichola Mallon said: "Rest up and take care Jeffrey".
UUP leader Doug Beattie also posted a message: "Take care Jeffrey. Hope you manage to get some rest and a degree of Christmas celebrations".
