The stealth omicron detection rate was 41.4%, an increase of 15.1%p from 26.3% the previous week, and the quarantine authorities announced on the 21st that they would extend the peak. Jung Eun-kyung, head of the Korea Centers for Disease Control and Prevention (KCDC) said, "Since the generation period for propagation is as short as 0.5 days, there is a risk of transmission, which may affect the ..