Corey Lewandowski, a top adviser for the Trump campaign, tested positive for the coronavirus.
He tested positive earlier this week after working in Pennsylvania on the president’s efforts to challenge that state’s election results.
Lewandowski, 47, said he believes he was infected with the coronavirus while working in Philadelphia.
His diagnosis with COVID-19 was first reported by The New York Times.
David Bossie, another adviser to the president, and Mark Meadows, the president’s chief of staff also tested positive for the Covid-19.