Short began isolating Saturday and assisting in the contact tracing process, according to Pence spokesman Devin O'Malley.
Both Pence and his wife, Karen, tested negative Saturday and Pence is not curtailing his movements despite having been in close contact with Short.
"While Vice President Pence is considered a close contact with Mr. Short, in consultation with the White House Medical Unit, the Vice President will maintain his schedule in accordance with the CDC guidelines for essential personnel," O'Malley said in the statement.
ence is head of the White House's coronavirus task force.
Pence was in the middle of his second campaign rally in Florida Saturday when Bloomberg reported that Marty Obst, his outside senior political adviser, had tested positive.
Bloomberg said it wasn't immediately clear whether Obst had developed symptoms of COVID-19.
CNN reported that Obst tested positive earlier this week.
Both Obst and Short often travel with Pence.