The country’s most populous province has ordered all migrant workers to get tested following a number of infection clusters.
Restaurants, coffee shops and gyms outside the capital Seoul and surrounding Gyeonggi province will now be permitted to stay open until 10pm.
South Korea reported 166 new cases as of midnight Friday, a five-month high, with most of the transmissions in Seoul and the surrounding Gyeonggi province.
Over the weekend the capital and neighbouring Gyeonggi province — between them home to nearly half the population — banned all religious gatherings and urged residents to avoid unnecessary travel
The new measures will take effect from Wednesday and last until Jan. 3, and will apply to the capital as well as Gyeonggi Province and the city of Incheon.
A new strain of bird flu was first detected last week in the Gyeonggi Province of South Korea before a second case was recorded days later causing lockdown measures to be brought in for birds in captivity