People line up for COVID-19 tests at a testing facility in Seoul, Thursday. (Yonhap)

South Korea confirmed more than 300,000 coronavirus cases for the second consecutive day Thursday as the dominant omicron variant of the coronavirus continued to spur new outbreaks nationwide.

The country reported 327,549 new COVID-19 infections, including 327,490 local cases, raising the total caseload to 5,539,650, according to the Korea Disease Control and Prevention Agency (KDCA).

Daily infections exceeded the 300,000 mark for the first time the previous day with 342,446 cases, when voters went to the polls to elect a new president.

The accumulated virus cases also surpassed the 5 million mark on that day, meaning one-tenth of the country's 52 million population has been infected with the virus.

The country crossed the 1 million mark early last month.

The omicron-fueled spike in infections has recently led to more COVID-19 deaths, and severe and critical virus cases.

The country added 206 more COVID-19 deaths, raising the total number to 9,646, according to the KDCA. The fatality rate was 0.17 percent.

Severe and critical virus cases came to 1,113, up 26 from the previous day. The tally's record high was 1,151 cases on Dec. 29.

The KDCA has raised the country's risk level of the pandemic to the highest, as omicron is causing record-breaking numbers of new daily cases.

It also scrapped its rigorous contact tracing program, which was successful in containing the spread of the virus in the early stages of the pandemic but is deemed unsustainable amid the unrelenting omicron surge.

It instead shifted its focus to preventing deaths and using medical resources to treat more serious cases by ramping up the use of rapid antigen self-test kits and at-home treatment.

Despite the spike in virus cases, the government relaxed part of its antivirus regulations last week to help struggling small businesses. Cafes and restaurants, among others, have been allowed to run until 11 p.m. since Saturday.

Of the locally transmitted cases reported, Seoul reported 66,859 new cases. The surrounding Gyeonggi Province and the western city of Incheon added 88,141 and 21,974 new infections, respectively. Cases from overseas went up 59 to 30,023.

As of the midnight, 31.9 million people, or 62.2 percent of the country's 52 million population, had received booster shots. The number of fully vaccinated people came to 44.4 million, accounting for 86.5 percent.

COVID-19 patients who were under at-home treatment rose 322,904 to 1.29 million, according to the KDCA. (Yonhap)