Broadcaster Mairead Ronan is off air and in isolation after her husband and their two young daughters were all diagnosed with Covid-19.
Mairead's husband, businessman Louis Ronan, and the couple's daughters, Bonnie (2) and Eliza (4), all tested positive for coronavirus over a period of eight days and are recuperating at home in Clontarf.
However, the 40-year-old broadcaster, who has been off the air at Today FM for the last week-and-a-half to care for her family, has so far escaped infection.
"I have been tested three times and I am completely negative," she told the Herald.
"I clearly have some sort of immunity to it because I haven't got it despite the fact that I was in the same bed as Louis. He was breathing all over me, I didn't get it and I still don't have it.
"That's three in the house who got it and myself and my 13-year-old son, Dara, both tested negative.
"We have been so careful all year but it's just everywhere.
"We were just unlucky and picked it up in the community. Louis was diagnosed on Monday last week, Bonnie was diagnosed two days later and Eliza tested positive two days ago.
"I could have cried when Eliza was diagnosed on Tuesday but thankfully, she is OK.
"I feel so disappointed because we have been so careful. That is almost the annoying part.
"I haven't seen my family since Christmas day but it is what it is.
"I am mystified because we were all so careful. I know what it takes to be careful and then it arrives, it is in my house."