Trump's top security aide tests positive for COVID-19: report

Robert O'Brien, national security advisor for U.S. President Donald Trump, has reportedly tested positive for COVID-19.

O'Brien has been out of the office since late last week, Bloomberg's news outlet reported on Monday, citing people familiar with the situation.

O'Brien, according to one of the people, came down with the novel coronavirus after a family event and has been isolating at home while still running the National Security Council, with most of his work done by phone.