The US President's tweeted that his wife Melania also has been infected, and they will self-isolate immediately.
It comes after White House adviser Hope Hicks recently tested positive.
Speaking to Fox News before he found out, Donald Trump said that they had been working closely together:
Tonight, @FLOTUS and I tested positive for COVID-19. We will begin our quarantine and recovery process immediately. We will get through this TOGETHER!
— Donald J. Trump (@realDonaldTrump) October 2, 2020
