Odisha's first COVID-19patient, a 33-year-old Italy-returned researcher, was on Friday discharged from the hospital, having recovered from the viral infection, a state health department official said.The man, who was admitted to the hospital with coronavirus infection on March 15, tested negative for the disease twice in a span of 24 hours, he said.Taking to Twitter, the state Health and Family Welfare Department congratulated the doctors and staff at the hospital, where he underwent treatment."The first COVID-19 positive case, belonging to Bhubaneswar who is being treated at Capital Hospital has recovered and tested negative to COVID-19," it said.The 33-year-old man is the second patient in the state to have recovered from the disease.On Wednesday, a 19-year-old London returnee, who had tested positive for the disease last month, was discharged from a hospital here.Currently, Odisha has four COVID-19 patients all of them undergoing treatment in Bhubaneswar-based hospitals.Meanwhile, National Health Mission (NHM) director Shalini Pandit on Friday said 15,000 people have returned to Odisha from abroad and other COVID-infected states within the country over the past 14 days. She asked the returnees to stay home and maintain social distancing norms."After 14 days, they should self-monitor their health for another two weeks. If they experience cough, cold, fever and breathing complications then they should call '104' helpline number" Pandit added.