The U.S. military in Japan on Friday announced that all arriving Status of Forces Agreement (SOFA) personnel must undergo mandatory COVID-19 testing prior to release from 14 days of quarantine.

The shift in policy comes amid an ongoing outbreak at American bases in Okinawa Prefecture, where the U.S. Marine Corps reported another 41 coronavirus infections Friday, bringing the total infections among the military there to 201 since the July 4 weekend.

The latest cases included 27 at U.S. Marine Corps Air Station Futenma in the city of Ginowan and 14 at Camp Hansen in the town of Kin.