BIRGUNJ: Four persons -- three Indian nationals and a Nepali teenager -- have been discharged from the hospital after recovering from coronavirus transmission in Birgunj, today. Narayani Hospital on Sunday discharged all four of them around 5 pm after keeping them under observation, in isolation, for 12-days. According to Dr Puruspottam Sedai, communication officer and chief of health department under the Provincial Social Development Ministry, throat swab samples of all four men taken within 24-hours had tested negative for infect. The specimen went under screening at Hetauda-based Vector-Borne Disease Research and Training Centre. So far, Nepal has reported 52 confirmed COVID-19 cases of which 36 are active and 16 other have recovered from the virus.