President Trump will not be tested for the coronavirus after coming into contact with a Brazilian official who tested positive for the virus just days after participating in meetings with him in Florida, the White House said on Thursday.

Fabio Wajngarten, a top communications aide to President Jair Bolsonaro of Brazil, tested positive days after accompanying him to Mr. Trump’s Mar-a-Lago resort and posing for a photo with the president and Vice President Mike Pence. In the photo, which he posted on social media, Mr. Wajngarten is standing shoulder to shoulder with Mr. Trump, who is clutching a brown “Make Brazil Great Again” baseball cap.

A video from the event also showed Mr. Wajngarten standing directly behind Mr. Trump and Mr. Bolsonaro as they spoke to a crowd.

After his meeting with the Brazilian delegation, Mr. Trump hosted a dinner for Mr. Bolsonaro and his aides. But Mr. Pence did not stay for the dinner, an aide said, and had not received any guidance from his physician that he needed to be tested or quarantined.