Ryan Tubridy had to drop out of his radio show today due to a “persistent” cough.
Comedian Oliver Callan announced there was nothing to worry about but the presenter, who was tested for Covid-19 last Friday, had to get the cough checked out.
And he said he didn’t doubt that Mr Tubridy will be back in time for Friday’s Late Late Show.
It was here last week that he has earned widespread praise for a speech he gave to the nation about the Covid-19 crisis.
He trumpeted the country’s frontline workers’ “heroism”.
And he told viewers: "It's normal to feel scared.
“It's perfectly normal to feel lonely, but you're not alone, big difference.”
Health Minister Simon Harris said Mr Tubridy had "so eloquently” captured our “individual and national anxiety whilst also reminding us that we will prevail".
As part of the show, he took a Covid-19 test to show people how it is done and what is involved.
On the show, the presenter talked about the importance of self-isolation for those who either show signs of or get the virus.
"Your sacrifice, through self-isolation, rescue this country from the worst chaos of the coronavirus,” he said.
“Your heroism, through self-isolation will end this terror sooner than it otherwise might end.
"Know that we surrender to self-isolation together, and we will share the emotional work together.
“When this is over, we will celebrate together and together we will lift each other back up.”
An RTE spokesperson said the national broadcaster does not comment on individual employees' private health matters.