Roker, who tested positive for COVID in September even though he has been vaccinated and boosted, said on social media he had blood clots that traveled to his lungs from a clot in one of his legs.

"So many of you have been thoughtfully asking where I've been. Last week I was admitted to the hospital w/blood clot in my leg which sent some clots into my lungs. I am so fortunate to be getting terrific care and on the way to recovery. Thanks for all the well wishes & prayers."