An outbreak of the coronavirus disease has been confirmed on the British Royal Navy’s flagship, HMS Queen Elizabeth.
The BBC has been told there have been around 100 cases on the aircraft carrier, which is part way through a world tour.
Several other warships in the fleet accompanying it are also affected.
Defence Secretary Ben Wallace said all crew on the deployment had received two doses of a Covid-19 vaccine and the outbreak was being managed.
HMS Queen Elizabeth is about a quarter of the way through a 28-week deployment leading the Carrier Strike Group (CSG).
It has now entered the Indian Ocean, and the Royal Navy says it is due to continue on its voyage to Japan later this year.
A spokeswoman said mitigation measured on board included masks, social distancing and a track and trace system.
“As part of routine testing, a small number of crew from the Carrier Strike Group have tested positive for coronavirus,” she said.
“The Carrier Strike Group will continue to deliver their operational tasks and there are no effects on the deployment.”