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

BIDEN'S CLAIM: Responding to a question about rights for LGBTQ people, Biden referenced the number of transgender people killed this year, saying it was at least 17.

FACT CHECK: After the mother of an 8-year-old transgender daughter asked Biden how he would restore rights to the LGBTQ community that had been eroded under the Trump administration, Biden acknowledged that the number of transgender people killed might be higher than he knows. And he was right.

"There should be zero discrimination, and what's happening is too many transgender women of color are being murdered," Biden said. "I think it's up to now 17 -- don't hold me to that number, but it's -- it’s higher now? And that's just this year. So I promise you, there is no reason to suggest that there should be any right denied your daughter."

According to the Human Rights Campaign, 33 transgender or gender non-conforming people have been fatally shot or killed by other means this year.

The organization, a progressive LGBTQ advocacy group, began tracking this data in 2013 and has never reported such a high number at this point in the year, according to its website.

It has tracked at least 126 deaths of transgender people since 2016 due to fatal violence, with most victims being black transgender women, but the organization said the violence is hard to track due to misgendering and transphobia. The actual number of killings could be much higher.

“Six transgender woman have been killed over the last 23 days — which is just over three weeks — in this country,” Tori Cooper, HRC's director of community engagement for its Transgender Justice Initiative, said in a statement Thursday.

“We have already seen more trans and gender non-conforming people killed this year since we began tracking these deaths in 2013, and the numbers continue to climb, even during a pandemic," Cooper said. "We must all ask ourselves what each of us is doing to work to bring this violence to an end."

-ABC News' Cheyenne Haslett