Photo/Illutration People wearing face masks to help protect against the spread of the coronavirus pass by banners showing the menu items of restaurants in Seoul on Aug. 28. (AP Photo)

SEOUL-- South Korea recorded its 16th consecutive day of triple digit rises in new coronavirus cases on Saturday, extending a second wave of infections that is fanning concerns about a shortage of hospital beds in Seoul.

The Korea Centers for Disease Control and Prevention (KCDC) posted 308 new cases as of midnight Friday, the majority of them in the capital and surrounding areas.

Outbreaks have continued to erupt at churches, offices, nursing homes and medical facilities, even after officials tightened social-distancing rules.

The spike in cases has depleted hospital facilities, with the health ministry reporting that just 4.5% of beds in greater Seoul were available for critical cases as of Friday, down from 22% a week earlier.

"Only about 15 beds are immediately available in the greater Seoul area for patients in critical condition as there were numerous patients who were in a serious condition and needed to be hospitalised," Yoon Tae-ho, director general for public health policy at the health ministry, said on Saturday.

"But we should have a little more room shortly because more people are being released," he told a news briefing.

The KCDC said that more than 1,000 cases have been traced to the Sarang Jeil Church in Seoul, which is at the centre of the new wave of infections. Its head, Rev. Jun Kwang-hoon, is an outspoken government critic who was also confirmed to have contracted the virus.

The church outbreak led to at least 25 new clusters, and more than 300 people who joined an anti-government protest this month together with church members have tested positive so far, according to the KCDC.

The resurgence in cases has brought the country's total reported COVID-19 cases to 19,400, including 321 deaths.

DOCTOR STRIKE

Dealing with the second wave of infections has been complicated by an ongoing strike of almost 16,000 intern and resident doctors. The medics walked out on Aug. 21, in a dispute over the government's plans to boost the number of doctors to better deal with health crises like the coronavirus.

The Health Ministry earlier this week filed a police complaint against at least 10 doctors and extended a back-to-work order for the doctors, who are the backbone of healthcare services in emergency rooms and intensive care units.

The striking doctors have volunteered at temporary testing centres to help with the outbreak, but major hospitals have reported delays and disruptions since their walkout.

"Doctors should be by the side of patients as we face the possibility of a nationwide transmission of COVID-19," Yoon said on Saturday.

"We are standing on the last line of defence to calm the spread in the Seoul metropolitan area, and if we fail at it, the only option we have left is to step up distancing rules to the highest level."

The government took the unprecedented step on Friday of restricting the operation of eateries in the capital area.

For a week starting on Sunday, onsite dining at restaurants, pubs and bakeries in the Seoul area will be banned after 9 p.m., while coffee shops, some of which have been identified as hotspots, are restricted to takeout and delivery.

Churches, nightclubs, gyms and most schools in the area are already closed, and masks are mandatory in public places.