“After testing positive, Kimberly was immediately isolated to limit any exposure,” said Sergio Gor, chief of staff for the Trump Victory Finance Committee. “She’s doing well, and will be retested to ensure the diagnosis is correct since she’s asymptomatic but as a precaution will cancel all upcoming events. Donald Trump Jr was tested negative, but as a precaution is also self isolating and is canceling all public events.”

Guilfoyle tested positive in South Dakota before she was set to attend the President’s event at Mount Rushmore, a person familiar with the matter and a campaign source familiar with the matter said.