Cases of the deadly coronavirus are spreading faster in South Korea, as the number jumped past 1,100 on Wednesday, local media reported.

The people infected include a U.S. soldier posted in the country, Yonhap news reported.

Korea’s Center for Disease Control and Prevention said coronavirus cases reached 1,146 today, as nearly 210,000 followers of a particular Christian sect were being examined. Twelve people have died of the disease.

Most new cases were centered at a branch of the sect – believed to be center of rapid infections – in the southeastern city of Daegu and a hospital in the neighboring county of

Read more: Coronavirus: Cases in South Korea jump past 1,100