South Korea reported 20 new cases of Covid-19 yesterday, according to the country’s Centers for Disease Control & Prevention.

This raises the national total to 11,142 cases and 264 deaths.

Nightclub cluster: Authorities have been working for the past two weeks to respond to a new cluster in Seoul’s nightlife district of Itaewon.

After cases began emerging in early May, authorities used credit card records and cell phone data to track down, test, and quarantine people who may have been in the area.

So far, 207 cases have been linked to the cluster, and more than 77,000 related tests have been conducted, Vice Health Minister Kim Gang-lip said today.