BEIJING — Most regions of China are now at low-risk of the novel coronavirus disease (COVID-19) as the country is taking effective measures in prevention and control, a Chinese health official said on March 22.

Among all the 46 new confirmed cases reported on March 21, 45 were imported COVID-19 cases and one was a domestically transmitted infection from imported cases in southern China's Guangdong province, Mi Feng, an official with the National Health Commission (NHC) said at a press conference in Beijing.

Before that, zero indigenous COVID-19 infections had been reported for three consecutive days across the Chinese mainland.

As of March 21, the epicenter city of Wuhan had marked its fourth day in a row of zero reports of domestic infections, and other regions in the hard-hit Hubei province outside Wuhan had not seen new indigenous COVID-19 cases for consecutive 17 days, according to NHC's daily report.