Combo photo shows U.S. President Donald Trump (L) and 2020 Democratic nominee Joe Biden delivering their respective speeches on different occasions. (Xinhua)

It is still unclear if Trump, who may remain contagious, will be healthy enough to show up for the debate.

WASHINGTON, Oct. 6  -- U.S. President Donald Trump, who is undergoing COVID-19 treatment at the White House, said on Tuesday that he is looking forward to the next debate with 2020 Democratic nominee Joe Biden.

"It will be great," Trump tweeted, referring to the second face-off with Biden, scheduled for Oct. 15 in Miami, Florida, a key battleground state in the presidential race.

In another tweet, he again sought to downplay COVID-19 by comparing it to flu, which was later hidden by Twitter behind a label stating that it "violated the Twitter Rules about spreading misleading and potentially harmful information" related to the virus.

It is still unclear if Trump, who may remain contagious, will be healthy enough to show up for the debate.