South Korea's new coronavirus cases rebounded above 50 today, on Saturday on cluster infections, putting health authorities on alert over a potential uptick in daily infections amid eased virus curbs, Yonhap reported. The country added 73 more COVID-19 cases, including 62 domestic infections, raising the total caseload to 25,108, according to the Korea Disease Control and Prevention Agency (KDCA). It marked a rise from 47 daily cases Friday but a decline from 110 cases Thursday, when more than 50 reported cases were tied to a nursing home in the southern port city of Busan. New virus cases dropped below the 50 mark for the first time since Sept. 29 on Friday, but health authorities remain vigilant about a potential spike in sporadic cluster infections. On Monday, the country relaxed its tougher virus curbs by one notch to the Level 1 social distancing measures in its three-tier scheme as new virus cases slowed down after a resurgence. Daily infections had been in the triple digits for more than a month since Aug. 14. New virus cases have largely slowed down on the back of weekslong stricter virus curbs put in place in late August. This month, daily infections underwent ups and downs, with virus cases rising above 100 sometimes. Health authorities called on people not to lose their guards as a flare-up in virus infections can happen anytime with sporadic outbreaks.