By Dong Sun-hwa The K-pop industry is taking a big hit amid the fourth wave of COVID-19 infections here, with a growing number of singers contracting the coronavirus. YG Entertainment, home to K-pop boy band TREASURE, said Tuesday that member Doyoung had tested positive. "Doyoung underwent COVID-19 testing before shooting a commercial on July 12 and tested positive," the company said in a statement. "All the other TREASURE members and support staff tested negative, but will still quarantine themselves." Soloist Seo In-young / Courtesy of Think Entertainment The news about Doyoung was delivered only a few hours after singer Seo In-young, best known for her 2008 hit "Cinderella," confirmed she had been infected.