More than 58% of the country's 52 million population has received vaccine booster shots.
The measures would be in place until at least March 13, officials said, after the March 9 presidential election.
South Korea’s new daily COVID-19 cases topped 100 000 for the first time amid an Omicron outbreak, the Korea Disease Control and Prevention Agency said on Friday, though deaths have remained relatively low in the highly vaccinated country.
More than 58% of the country's 52 million population has received vaccine booster shots.
The measures would be in place until at least March 13, officials said, after the March 9 presidential election.