TANGLA: Sixteen new COVID-19 cases were reported in Udalguri on Sunday. The 16 fresh cases included a doctor of Tangla CHC, a NHM health worker of Harisinga and 14 persons of a quarantine centre. Confirming the development, a senior district health official said that though swap samples of medical workers had been collected, the swab samples of the staff of Tangla CHC would again be collected for testing. "The doctor is also suffering from liver ailments," the official added. Meanwhile, the health department and administration declared the hospital as containment zone on Sunday night.