China reported 19 new coronavirus cases in the mainland for Oct. 19, up from 13 cases a day earlier, the health commission said on Tuesday.All of the new infections were imported, the National Health Commission said in a statement.China reported 24 new asymptomatic patients, compared with 33 a day earlier.As of Monday, mainland China had 85,704 confirmed coronavirus cases, the health authority said. The Covid-19 death toll remained unchanged at 4,634.