U.S. Vice President Mike Pence and second lady Karen Pence tested negative for COVID-19 on Sunday, an official confirmed.

The news came in the wake of Pence traveling to several states for indoor and outdoor events, taking part in many White House events and meetings and having been in frequent close contact with President Donald Trump.

These are the third negative results both Pence and his wife have received in the past week since Trump tested positive for the coronavirus.

Trump announced early on Friday that he and First Lady Melania had tested positive for the coronavirus. However, while Trump has been hospitalized, Melania was not as her symptoms were not as bad as his.

There are concerns, though, about Pence's safety and risk of contracting the virus given that he is expected to continue with his travels.

Jason Miller, a senior Trump campaign adviser, said Pence will continue going on the road in light of the upcoming vice-presidential debate and election.

"We're in a campaign. We have a month to go. We see Joe Biden and Kamala Harris out there campaigning. Certainly, they're not asking for a remote debate," Miller said.

"Vice President Pence is following the debate, for the vice-presidential candidates, on Wednesday. He will be hitting the trail...and he's going to have a very full aggressive schedule as will the first family…no concerns at all."

(With input from agencies)