Queen Elizabeth.Photo: VICTORIA JONES/POOL/AFP via Getty Images

Queen Elizabeth II appears on a screen via videolink from Windsor Castle

AsPrince CharlesandCamilla, Duchess of Cornwallcontinue their self-isolation followingpositive COVID-19 tests,Queen Elizabethis back to work.

The monarch, 95, conducted two virtual audiences on Tuesday. From Windsor Castle, she met with two ambassadors to the U.K., Estonia’s Viljar Lubi and Spain’s Jose Pascual Marco Martinez, who were at Buckingham Palace.

The Queen’s virtual audiences on Tuesday mark the first time she’s had a public royal duty since it was announced last week that she had met with sonPrince Charlesjust two days before hetested positive for COVID-19.

A royal sourcesaidat the time thatQueen Elizabethwas not displaying any symptoms but was being monitored.

Estonia’s Ambassador to the U.K. Viljar Lubi meets with Queen Elizabeth.VICTORIA JONES/POOL/AFP via Getty Images

Queen Elizabeth II appears on a screen via videolink from Windsor Castle

“She was engaging. The Princess Royal has done a few and was more comfortable but the Queen was perfectly comfortable with the camera in front of her,” chief executive of theCarers TrustGareth Howells, who was on the call with the Queen, told PEOPLE. “A couple more times and she’ll be a dab hand at it!”

Prince Charles, 73, is self-isolating after testing positive for coronavirus for the second time. Hefirst tested positivefor the viral disease at the onset of the pandemic in March 2020.

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Prince Charles, Camilla and Queen Elizabeth.Chris Jackson/Getty

Prince Charles, Prince of Wales, Camilla, Duchess of Cornwall, Queen Elizabeth II

On Monday, a spokesman at Clarence House announced thatPrince Charles' wife had also tested positive for coronavirus and was self-isolating.

Camilla, 74, who is triple vaccinated, was on aroyal outing in Londonon February 10, when it was announced that Charles had tested positive.

source: people.com