South Korea recorded the highest number of Covid-19 cases on a single day — whopping 950 infections — on Saturday.
Most of the new cases were reported in the capital Seoul and surrounding areas.
The region is home to around half of South Korea’s population.
In recent days, the country has recorded between 500 and 600 new daily infections.
President Moon Jae-in said the country was facing “an emergency situation” and vowed to strengthen testing and tracing in response.”
“This is the last hurdle before the roll-out of vaccines and treatments,” he said.
Earlier this week, South Korea raised its level of alert amid a third wave of cases.
New measures, which came into effect on Tuesday, include a ban on gatherings of more than 50 people. Gyms and karaoke bars have been closed, while restaurants are only allowed to offer deliveries after 21:00 local time.
However, the government has warned that restrictions could be raised to the highest level, which would see gatherings limited to 10 people, school closures and all but essential roles working from home.
Overall South Korea has recorded over 41,000 infections and 578 deaths since the pandemic began ten months ago.
The country initially saw a huge spike in infections in February, after a religious group in the city of Daegu was identified as a virus cluster.
Unlike many countries in Europe and elsewhere, however, the South Korean government has avoided nationwide lockdowns and has instead focused its efforts to contain the virus on testing and contact tracing.