In a clip published Monday, Quest, 58, opened up about his condition and getting tested over the weekend.
"Yep, I've got a positive diagnosis for COVID-19," he said. "I am grateful and thankful that I don't seem to have any of the horrific symptoms of the others. I just have a nasty cough, which, thankfully tonight because of our excellent technical staff, you haven't heard me too much spluttering away."
Quest added that he does not have "any of the awful breathlessness or fatigue" described by others with the virus.
"I'm grateful of course to the enormous support given and all the great medical staff that are helping me get over this," he continued.
Though he understands many viewers may want him to "take it easy," Quest said he will continue his work at CNN until "it all gets too much."
"I'm not a fool, nor am I a hero, but at the moment I feel fine. I feel good, and there are important things that you and I need to talk about every night," he said. "Which is why, as long as I can, and I don't see why not, you and I will still get together at this time and have a good chat about the economic side of what's going on."