The government announced yesterday that it would adjust its epidemic prevention measures, including adding a "red and yellow code" to the "vaccine pass" from today, so that people diagnosed with the disease will be issued a "red code" and people from overseas regions or Taiwan will be issued a "yellow code". From this Friday, the quarantine arrangements for people from overseas regions or Taiwan who come to Hong Kong will be unified as "3 + 4", that is, they will be isolated from the quarantine hotel for three days, and they can leave the quarantine hotel after obtaining negative results of nucleic acid test. During the next four-day medical supervision period, they are not allowed to enter the places, restaurants, schools, institutions and clinics listed in the vaccine pass, but they can return to school. Those who have been quarantined in the hotel can leave the hotel as soon as possible if they have stayed for 3 nights. Chief executive Li Jiachao said yesterday that the overall epidemic prevention policy is "not lying flat" and scientifically and accurately identify people at different risk levels. There is no contradiction between Hong Kong and the world and the mainland. Hong Kong is still trying to negotiate customs clearance with the mainland. Lu Chong Mao, director of the medical and Health Bureau, said that the data showed that the government had found 80% of the imported confirmed cases through the first three days of hotel quarantine, and the effect of the remaining four days of hotel quarantine was not high. It is believed that the four-day home medical monitoring can also identify the imported cases and block the community transmission. He stressed that after three days of hotel quarantine, the risk of confirmed diagnosis of passengers was less than 1%, and the current community infection rate was higher than this figure. The chief executive stressed that the epidemic prevention "does not lie flat". Li Jiachao said that it is not cost-effective, accurate and targeted to force more days of quarantine at designated quarantine hotels to detect a small number of imported cases. The five main points of the government's overall epidemic prevention policy are "not lying flat" and controlling the number of confirmed cases; Identify people with different risk levels with scientific and accurate methods; Balancing risk and economic dynamics; Weight loss and death reduction; The protection of high-risk people includes "one old and one young" and chronically ill patients. Under the new measures, the Department of health will require all confirmed patients, people from overseas regions or Taiwan to install or update "safe travel" to version 3.4.0 or above, and ensure that the relevant mobile devices have network connectivity. The program will automatically compare the list and then automatically change the color of the user's QR code. "Red and yellow codes" will automatically change to normal "blue codes" upon completion of the regulation. The quarantine requirements of people arriving from the mainland or Macao will be streamlined at the same time. For those who do not arrive from the mainland or Macao through the easy return to Hong Kong or easy access to Hong Kong plan, the mandatory quarantine period at home will be adjusted to 3 nights, and self-monitoring will be conducted for 4 nights from the third day of arrival. Restaurants and other places need to update the scanners. Starting from today, the person in charge of the premises must check the QR code displayed on the mobile app of "safe travel" to ensure that the customer is not holding a "red code" or a "yellow code". Premises using "verification QR code scanner" must update their scanners to version 4.4.0 or above before this Friday to scan new QR codes. Sun Dong, Secretary of innovation, technology and industry, said that the personal data on the "vaccine pass" will be encrypted and transmitted to the government database. The data will only be stored in the user's safe travel program, and there is no problem of disclosing personal information. Those with "yellow code" can go back to school again, depending on whether the employer or the person in charge has formulated additional requirements or requirements according to their own needs. Director of infectious diseases division of the center for health protection