US President Donald Trump says son Barron is "free" from coronavirus after First Lady Melania revealed he tested positive to the disease earlier this month. After she and Mr Trump also tested positive earlier this month, the White House said 14-year-old Barron had tested negative. Barron later tested positive for the virus but had no symptoms, she said on Wednesday, adding that he has since tested negative again. The president, speaking at a campaign rally in Iowa, was cavalier about Barron’s infection, saying, “He had it for such a short period of time, I don’t even think he knew that he had it.”