WILMINGTON, Delaware - Democratic presidential candidate Joe Biden plans to head to the battleground state of Michigan and resume campaigning on Friday after testing negative for coronavirus, hours after President Donald Trump was sidelined by contracting the virus.

Biden, who met in a one-on-one debate with Trump on Tuesday night, and his wife Jill tested negative for coronavirus on Friday, their doctor said in a statement.

After the result was announced, Biden headed to the airport, where he was scheduled to travel to Grand Rapids, Michigan, for a campaign event.

"I’m happy to report that Jill and I have tested negative for COVID," Biden said on Twitter. "Thank you to everyone for your messages of concern. I hope this serves as a reminder: wear a mask, keep social distance, and wash your hands."

Biden earlier sent well wishes to Trump, his rival in the Nov. 3 presidential election, who is experiencing mild symptoms after testing positive for coronavirus.

The White House and his election campaign were scrambling to adjust to the bombshell development.