Four activists in Macao have been listed as close contacts of confirmed cases in Zhuhai and Zhongshan, the Health Bureau of the Macao SAR government said on the 16th. Three of them are in Macao and have been arranged for medical observation in Gaoding public health clinical center. Up to now, they have been negative through multiple nucleic acid tests; Another person conducted medical observation in the mainland. The Health Bureau said that according to the activity track of the four close contacts in Macao, up to now, 1330 close contacts, common track persons and key control persons have been followed up. According to the degree of risk, medical observation is carried out in designated hotels, isolated in situ for medical observation, or three-day double inspection and other control measures are implemented in Macao. On the same day, the Macao Special Administrative Region Government's New Coronavirus infection coordination center reminded again that after January 1st or later, people in the risk areas such as Nanping town of Zhuhai had their health codes locked into yellow code. They should be tested according to the sequence of first, second, fourth, 7 and 12 days, until the health code was transferred back to green code 14 days after the risk area had been removed. The Health Bureau said that so far, 17744 people who have voluntarily declared through the Macao health code have tested 27157 people, and the results are negative. (Xinhua News Agency)