South Korea has reported another 950 coronavirus cases, its largest daily increase since the emergence of the pandemic, as fears grow about overwhelmed hospitals in the greater capital area.

The figures released by the Korea Disease Control and Prevention Agency brought the country’s caseload to 41,736 after health officials added more than 8,900 cases in the last 15 days alone. Six Covid-19 patients died in the past 24 hours to bring the death toll to 578.

Nearly 680 of the new cases came from the densely populated Seoul metropolitan area, where health workers have struggled to track transmissions popping up from just about everywhere, including hospitals, long-term care facilities, restaurants, saunas, schools and army units.