The number of newly infected people with the new coronavirus in South Korea reached a record high.
Cases of suspected Omicron strains have also been confirmed for the first time.
According to the South Korean government, the number of new infections on November 30 was a record high of 5,123, more than tripled from a month before deregulation began.
The number of seriously ill people is 723, which is the highest ever.
As the tightness of the sickbed became more serious, the government is busy dealing with mildly ill people, such as treating them at home in principle.
Health officials have also announced that four people, including the returning couple and their acquaintances, have visited Nigeria and are conducting detailed tests for suspected infection with the Omicron strain.
President Moon held an urgent meeting on the night of November 30 and instructed him to immediately strengthen border measures.