WASHINGTON: General Mark Milley, chairman of the US Joint Chiefs of Staff, is self-quarantining after contact with a Coast Guard officer who tested positive for Covid-19, a military source said Tuesday.

The Pentagon said several 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.