SEOUL, South Korea — South Korea has reported 42 new infections of COVID-19 as infections steadily climb in the greater capital area, forcing authorities to consider stronger social restrictions.

The figures announced by the Korea Centers for Disease Control and Prevention on Monday brought the national caseload to 12,757, including 282 deaths. Twenty-four of the new cases were reported from capital Seoul and nearby metropolitan areas, which have been at the center of a virus resurgence since late May. At least 12 of the new cases were linked to international arrivals as the virus continues to strengthen its hold in southern Asia, the United States and beyond.

South Korea was reporting hundreds of new cases a day in late February and early March following a major surge surrounding the southeast city of Daegu, where the majority of infections were linked to a single church congregation with thousands of members.

But while health authorities had used aggressive testing and contact tracing to contain the outbreak in that region, they are having a much harder time tracking recent transmissions in the Seoul metropolitan area, where about half of the country’s 51 million people live. With people increasingly venturing out in the public, new clusters are popping out from just about everywhere, including nightspots, churches, restaurants, warehouses and among door-to-door salespeople.

Health Minister Park Neung-hoo during a briefing Sunday afternoon announced that the government is prepared to implement stronger social distancing measures if the epidemic continues to grow.