Marty Obst serves as Pence’s senior political adviser, but is not a government employee.
Obst and Pence’s office did not immediately return CNN’s request for comment.
It is not clear when Obst was last close to Pence.
The vice president, who heads the Coronavirus task force at the White House, held a rally in Tallahassee, Florida, Saturday night.
President Donald Trump and First Lady Melania Trump tested positive for coronavirus earlier this month, prompting the president to enter the Walter Reed National Military Medical Center for treatment. After the White House doctor signed to let Trump return to his public schedule, the Trump campaign continues to stop across the country to fight for re-election.
This is a groundbreaking story and will be updated.