Derek Hough has tested positive for coronavirus. The 36-year-old "Dancing With the Stars" judge shared the news on Instagram on Tuesday. "Hey everyone, I have some news to share, and I wanted you to hear it straight from me," he began in his video message. "Even though I have been fully vaccinated, I've just been diagnosed with a breakthrough case of COVID — just found out." He said that as of right now, he's feeling "strong" but is adhering to the advice of medical professionals and "doing everything I can to get better as fast as I can." "I'm currently in quarantine, and I'll make sure I keep you guys all updated with what's going on, but I just wanted to send a lot of love out there to you all," the star continued.