People taking flights in civil aircraft from different provinces and cities in Mainland China will be required to present a valid negative nucleic acid test certificate within 48 hours before boarding the plane starting from midnight of July 31, health authorities announced.
Authorities have also expanded the scope of the definition of medium-and high-risk areas.
Previously authorities only defined a certain street or a certain administrative area in Mainland cities as medium or high risk, but now the entire city will be defined as a medium-high risk in response to changes in the pandemic.
Health Bureau Director Alvis Lo also revealed yesterday that more than 100 people who have visited Zhangjiajie, Hunan Province since 17 July and have since returned to Macau will be placed under medical observation.
All those who have been in Zhangjiajie, Nanjing and Changde since the 17th and that have meanwhile returned to Macau will be subject to a 14-day quarantine period, during which they will have to undergo three nucleic acid tests.