Biden has tested negative for COVID-19, according to a new statement Thursday evening, following their announcement earlier in the day that Biden had tested negative Wednesday night.

"Vice President Biden underwent PCR testing for COVID-19 today and COVID-19 was not detected," the campaign said in the Thursday evening statement.

This test comes after the campaign announced an aviation staffer who flew with Biden Monday and Tuesday of this week, but had no passing or close contact to Biden, tested positive for COVID-19.

With President Donald Trump and former Vice President Joe Biden holding separate town halls on the same night, “The View” co-hosts discuss which candidate will benefit most.

The Biden campaign announced that a person working with the aviation company that charters former Vice President Joe Biden's plane tested positive for COVID-19 Thursday.  While that person flew with Biden on Monday and Tuesday, the campaign said they were not in close contact with the former vice president or his campaign staff.

"The Vice President did not even have passing contact: this individual was over 50 feet from VP Biden at all times, entered and exited the aircraft from a rear entrance, and both the individual and the Vice President wore masks for the entire flight," Biden campaign manager Jen O'Malley Dillon said in a statement.

The aviation company employee's diagnosis was discovered as a result of the campaign's contact tracing following the positive diagnosis of Sen. Kamala Harris' communication's director Liz Allen and a non-staff flight crew member.

Although Harris tested negative for COVID-19, she canceled her in-person campaigning through Monday.

Because of Biden's lack of contact with the person who tested positive for COVID-19, his campaign said it would not be taking any additional precautions. Biden will still participate in an ABC News town hall Thursday night.

The Biden campaign announced earlier Thursday that Biden underwent a PCR test for COVID-19 Wednesday night and that test came back negative.

ABC News' Molly Nagle

The Biden campaign announced earlier in the day that the former vice president tested negative for COVID-19 Wednesday night -- the eighth publicly announced Biden coronavirus test result.

"As part of our regular routine of testing, Vice President Biden underwent PCR testing for COVID-19 last night and COVID-19 was not detected," the campaign said in a statement.  

It came on the heels of another announcement that a top aide to Sen. Kamala Harris, D-Calif., Biden's running mate, tested positive for COVID-19, prompting Harris to suspend travel "out of an abundance of caution" through Monday.

Harris and her husband, Doug Emhoff, both tested negative for COVID-19 Thursday, the campaign said.

-ABC News' Molly Nagle and Averi Harper

ABC News Political contributor and Democracy for America CEO Yvette Simpson said that Thursday night's town hall was the best she'd seen Biden.

"I think he did a great job not just directly answering questions, talking about specific policies," she said. "I think he took that very hard stance of acknowledging that he was wrong about the 1994 crime bill, which I think was a great position for him to take, so I think it was a great night for him."

Simpson added that Biden is "walking a tightrope."

"If you're the leader of a party you have to take everybody's opinions to bear. We have not seen that with Donald Trump he's not listening to most Republicans or most people," she said. "And I actually do respect Joe Biden for, I think, having a broader perspective, listening to all sides, and actually being willing to adjust his own thinking to the realities of the day."