"I had been hurting from the top of my head to the tip of my toes. Literally everywhere. I was also beset with uncontrolled shivering all during my show," Roberts told the outlet.

"Initially, I thought it was just muscle cramps and aches. But when I started shivering, I started to lean toward the flu," he continued.

"Thank you to Trace for jumping into the chair today! I somehow came down with a severe case of Malaria. I can honestly say that I am the only person in the hospital with Malaria. In fact, one of my doctors said I'm the first case he has ever seen," Roberts wrote on X earlier this week.

"Thanks to the folks at @InovaHealth for their expertise and compassion...!" he added.

Roberts says he "knew it was bad" when his blood work showed that his platelets and white blood cells were both low. "My rheumatologist told me to go to the ER," he recalls.

Once hospitalized, Roberts received the official diagnosis. "I thought, 'Of course you have malaria... You never do anything in small measures.' But I was a little scared," he admits. "Malaria can be deadly if left unchecked."

"I don't know exactly how 'severe' it was from a medical classification, but it sure felt severe," he adds. "I have never felt that sick in my life."

There are approximately 2,000 cases of malaria diagnosed in the United States every year, with most of them occurring in patients who caught the disease elsewhere.

Roberts revealed he recently went on vacation in Indonesia for two weeks.