BEIJING, April 15 (Xinhua) -- A total of 1,430 COVID-19 patients were discharged from hospitals after recovery on the Chinese mainland on Thursday, the National Health Commission said in its Friday report. That brought the mainland's total number of COVID-19 patients discharged from hospitals after recovery to 145,352 as of Thursday. Over the past day, 28,778 close contacts were released from medical observation on the mainland, the report showed.