It's been announced that SKE48 member Fukushi Nao has been diagnosed with COVID-19. 

Fukushi started feeling uncomfortable on the night of December 21st, then woke up with a fever the following day. Her initial test result came back negative so she just rested at home. After a few days, she didn't seem to be getting better, so she got tested again on December 25th which came back positive. While her condition has stabilized, she will be recuperating at home until January 3rd. 

After Fukushi's positive diagnosis, 15 members of SKE48 have been identified to be persons of close contact. As such, all performances for the rest of the year have been cancelled.