The Korea Centres for Disease Control and Prevention says the additional figures released Sunday took the country's total to 11,190 with 266 deaths.
The agency says 10,213 of them have recovered and been released from quarantine.
It says 17 of the 25 new patients were locally infected while the rest eight came from overseas.
South Korea eased much of its strict social distancing rules in early May before it saw a sudden uptick in the number of cases associated with nightclubs in Seoul's Itaewon entertainment district.
Health authorities say they've confirmed a total of 225 cases linked to Itaewon cubs as of Sunday noon. (AP) SCY SCY