The 95-year-old monarch of the United Kingdom, Queen Elizabeth, is experiencing "mild, cold-like symptoms", according to Buckingham Palace.

She plans to continue performing "light duties" at Windsor Castle after testing positive for COVID-19. Anyone in the U.K. is required to self-isolate for five days after a positive diagnosis.

"She will continue to receive medical attention and will follow all the appropriate guidelines," the palace said in a statement.

Earlier this month, Prince Charles tested positive for COVID-19. Two days prior to his diagnosis, he visited the Queen.

Today's news comes two weeks after Queen Elizabeth celebrated her 70th year on the throne.

That's the longest reign of any monarch in British history.