A worker at a 7-Eleven convenience store in Yamanashi Prefecture has contracted the new coronavirus, the company said on Sunday.

The unit of retail group Seven & I Holdings said it temporarily closed the store for cleaning and disinfection after the infection was confirmed on Saturday and implemented various safety policies at its shops nationwide, including the wearing of masks.

A separate coronavirus patient in the prefecture was in serious condition, the Yamanashi Prefectural Government said Saturday. The man in his 20s tested positive for the coronavirus on Saturday and is unconscious with a fever, pneumonia and meningitis, the prefectural government said. This marks the first case in Japan where the new coronavirus has caused meningitis, University of Yamanashi President Shinji Shimada said at a news conference on Saturday.