Mark Milley
Mark MilleyReuters

General Mark Milley, chairman of the US Joint Chiefs of Staff, tested negative for COVID-19 but is self-quarantining after contact with an infected Coast Guard officer, a defense official said Tuesday, according to AFP.

"The chairman, the vice chairman and all the service chiefs tested negative," said the official, who requested anonymity.

The Pentagon said a number of senior US military officers were self-quarantining after attending meetings last week with the Coast Guard's vice commandant, Admiral Charles Ray.

"We are aware that Vice Commandant Ray has tested positive for COVID-19 and that he was at the Pentagon last week for meetings with other senior military leaders," said Pentagon spokesman Jonathan Hoffman. "Some meeting attendees included other service chiefs."

"Out of an abundance of caution, all potential close contacts from these meetings are self-quarantining," Hoffman said. "No Pentagon contacts have exhibited symptoms and we have no additional positive tests to report at this time."

The Coast Guard said Ray had tested positive on Monday after experiencing mild symptoms and was quarantining at home.

Hoffman stressed there has been "no change to the operational readiness or mission capability of the US Armed Forces."

The confirmed case within the Coast Guard comes after President Donald Trump announced last week that he and First Lady Melania Trump had tested positive for COVID-19.

On Monday, Trump was discharged from the Walter Reed Medical Center, where he had been hospitalized since Friday, and returned to the White House.

In addition to Trump and the First Lady, White House press secretary Kayleigh McEnany and two assistant press secretaries have tested positive for the virus as well.

US Senator Mike Lee (R-UT), who was at the White House for Trump's announcement of his pick of Amy Coney Barrett for the Supreme Court, also tested positive for the coronavirus.