SEOUL, South Korea — South Korea has reported new 559 cases of the coronavirus, its highest daily increase in 10 days, as health workers scrambled to slow transmissions at religious facilities, which have been a major source of infections throughout the pandemic.

The figures released by the Korea Disease Control and Prevention Agency on Wednesday brought the national caseload to 76,429, including 1,378 deaths.

The agency said 112 of the new cases came from the southwestern city of Gwangju where more than 100 infections have so far been linked to a missionary training school. An affiliated facility in the central city of Daejeon has been linked to more 170 infections.

Nearly 300 of the new cases came from the Seoul metropolitan area, home to half of the country’s 51 million people, where infections have been tied to various places, including churches, restaurants, schools and offices.