Queen Elizabeth, 95, has tested positive for COVID and is experiencing mild symptoms, Buckingham Palace said on Sunday.
"The queen has today tested positive for COVID," the Palace said. "Her Majesty is experiencing mild cold like symptoms but expects to continue light duties at Windsor over the coming week.
"She will continue to receive medical attention and will follow all appropriate guidelines."
Charles, 73, the heir to the throne, earlier this month pulled out of an event after contracting coronavirus for a second time. A palace source said he had met the queen just days before.
The health of the queen, the world's oldest and longest-reigning monarch, has been in the spotlight since she spent a night in hospital last October for an unspecified ailment and then was advised by her doctors to rest.
Elizabeth on Wednesday quipped to members of the royal household that she could not move much as she carried out her first in-person engagement since Charles tested positive.
US and Pakistani leaders forecast a Sunday signing of a long-elusive framework agreement to end fighting between the United States and Iran, but timing remains unclear.
Switzerland on Sunday rejected a referendum proposal to cap its population at 10 million, a projection showed, as voters prioritised economic stability and the country's ties with the European Union over immigration concerns.
Ukraine hit an oil facility overnight in Russia's Yaroslavl region, and the Azot chemical plant in the Tula region, President Volodymyr Zelenskyy wrote on X on Sunday.
Sirens sounded in Jordan, state TV reported early on Sunday, before the Public Security Directorate said a technical malfunction was to blame and a fault in one of the sirens was being repaired.
An Indian military aircraft crashed on Saturday during a routine flight, killing all five people on board, the Indian Air Force said in a social media post on X.
A Ukrainian drone attack killed one person and sparked a fire at a sea terminal in the southern Russian port of Temryuk, in the Krasnodar region, governor Veniamin Kondratiev said on Saturday on the Telegram messaging app.
President Donald Trump on Friday said US forces carried out a strike that killed Hector Rusthenford Guerrero Flores, also known as Niño Guerrero, the leader of Venezuelan prison gang Tren de Aragua.
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