Trump Jr.is following all medically recommended guidelines for COVID-19, the disease caused by the virus, the spokesperson added.
The spokesman said the younger Trump learned of his diagnosis earlier this week, but he has no symptoms and has been quarantining.
President Donald Trump tested positive and was shifted to the army hospital for better treatment, where he claimed to have found the "magical cure".
Brexit talks on hold after European Union negotiator tests positive for Covid-19
Barnier said that, together with Frost, "we have made a decision to suspend the negotiations at our level for a short period". A UK Government spokesman said ministers were now talking to Brussels about the "implications for the negotiations".
A spokesman for Trump Jr. said Friday that he tested positive at the beginning of the week and began quarantining.
Bloomberg first reported the news.
Last week, Trump campaign adviser Corey Lewandowski tested positive, as did David Bossie, the adviser leading the election lawsuit efforts. One of the lawyers, Jenna Ellis, said Friday on Twitter that she and Rudy Giuliani had tested negative for infection. In the middle of the election cycle, President Trump and First Lady Melania Trump had tested positive for COVID-19.
8 injured in shooting at U.S. mall in Wisconsin
While the seriousness of their injuries is not known as yet, the injured have been rushed to hospital. Mayfair Mall management has indicated that the mall will be closed tomorrow, Saturday, November 21.
Trump's girlfriend Kimberly Guilfoyle had tested positive for coronavirus over the summer. Several guests tested positive for Covid-19 after attending a nomination ceremony in late September for Supreme Court Justice Amy Coney Barrett, where attendees commingled, shook hands and few wore masks.
Trump Jr. was among the roughly 250 guests who attended the White House's indoor election night party, where almost every attendee was seen not wearing a mask.
Apple agrees to settle iPhone throttling lawsuit for $113M
Apple is the most valuable company on this planet, and it acted deceptively by hiding the shutdown and slowdown problems. Nonetheless, the legal challenges continued.