June 05, 2020 13:07
Health authorities are on alert as many recent coronavirus infections cannot be traced to a definitive source.
Infections from unknown sources pose a higher transmission risk especially for the elderly and patients with chronic diseases as well as in hospitals and nursing homes.
Out of 507 new cases that have been detected over the past two weeks, 364 occurred in clusters, 96.2 percent of them in the Seoul metropolitan region.
But 45 cases came from unknown sources.
Jung Eun-kyeong, the chief of the Korea Centers for Disease Control and Prevention, said, "The percentage of cases from unknown sources has increased nearly eight percent recently, posing a high risk of infection."
An increasing number of new cases have been traced to small churches in the Seoul area, crammers and visiting salespeople of health products.
A fresh case also occurred Thursday at a Coupang logistics warehouse in Bucheon, Gyeonggi, bringing the total number there to 120.
Korea reported 39 news cases as of Friday morning, 34 of them in the Seoul metropolitan region, bringing the total number of confirmed cases to 11,668.
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