Donald Trump Junior has tested positive for Covid-19, his spokesman confirmed.
The spokesman said the younger Trump learned of his diagnosis earlier this week, but he has no symptoms and has been quarantining.
Mr Trump Jr, who is the outgoing president’s eldest son, is the latest member of the family to become infected with the virus.
Trump Snr, the first lady and their son Barron have already recovered from Covid-19.
Don tested positive at the start of the week and has been quarantining out at his cabin since the result,’ Trump Jr.’s spokesperson said.
‘He’s been completely asymptomatic so far and is following all medically recommended Covid-19 guidelines.’
Andrew Giuliani, the son of the president’s personal lawyer Rudy Giuliani and a White House aide, also said he tested positive for Covid-19 on Friday.
Trump’s chief of staff Mark Meadows and a number of aides in his campaign and the White House have also tested positive in recent months.
The administration has been criticised for spreading false information about the virus and flouting public health guidelines such as mask wearing.
Trump Jnr, who campaigned for his father throughout the country, faced backlash last month after telling Fox News that the number of deaths from Covid-19 is now ‘almost nothing’ – on a day when nearly 1,000 new fatalities were recorded.