China steps up efforts to control imported COVID-19 cases 

From March 19 to 29, a total of 443 visitors, who had already shown fever symptoms, were discouraged from boarding flights to China, according to an official from the Civil Aviation Administration of China, as the country steps up efforts to control imported COVID-19 cases. 

During this period, a total of 1,626 passengers who were found with fever symptoms after boarding have been quarantined in cabins, according to Jin Junhao, deputy inspector of the aviation administration's transportation department. 

These passengers were later transferred to relative quarantine departments after landing, Jin added.