Comedian-host Ellen DeGeneres has said that she got to know about her Covid-19 diagnosis when she was getting ready for her show, revealing that everyone around her ran away soon after.

As the popular television host returned to her talk show, she used an opening monologue to detail her Covid experience, reports variety.com.

"I was getting ready to tape the show, and I was in hair and makeup, getting my face powdered and my extensions put in, and then my assistant, Craig, walks in and said, ‘You've tested positive for COVID'," DeGeneres said.

"And then everyone around me ran away. It's funny, people just really get scared and they ran. Some have not come back since. So anyway, I left the studio immediately and our Covid safety team informed everyone I had been in contact with. They told (executive producer) Andy Lassner and he ran at full speed off the lot, which is amazing -- I didn't realise you could run," she added.

"I went home, obviouslyI had to quarantine," she continued, adding: "Portia (de Rossi) made me sleep in a different room on a different bed because she wanted the race car bed all to herself. The first three days, I slept for 16 hours a day. And then on the fourth day, I woke up with back spasms. It just persisted and the doctor put me on pain pills and muscle relaxers."

DeGeneres announced her diagnosis on December 10, writing on Twitter: "Hi Everyone, I want to let you all know that I tested positive for Covid-19. Fortunately, I'm feeling fine right now. Anyone who has been in close contact with me has been notified, and I am following all proper CDC guidelines.

"I'll see you all again after the holidays. Please stay healthy and safe. Love, Ellen," she added.