South Korea reported fewer than 120 new coronavirus cases on Thursday, but authorities warned that a new cluster in Seoul could see the infection spread in the capital. “This could lead to a ‘super spread’ in the metropolitan area, where half of the entire population are concentrated,” Prime Minister Chung Sye-kyun told a meeting on Thursday. The South was the first country to report significant coronavirus numbers outside China, where the disease first emerged, and remains one of the world’s worst-affected countries despite being overtaken by both Italy and Iran in declared cases.