Three actors, Swati Chitnis, Sachin Tyagi, Samir Onkar, and four crew members of show 'Yeh Rishta Kya Kehlata Hai' have tested positive for coronavirus, producer Rajan Shahi said in a statement. The actors are asymptomatic and have been quarantined at home, he added. "The BMC has been informed, and the entire set has been sanitised and fumigated," Rajan further said.