近日，国务院应对新型冠状病毒肺炎疫情联防联控机制综合组组织修订《新型冠状病毒肺炎防控方案（第九版）》，全面落实“外防输入、内防反弹”总策略和“动态清零”总方针，切实维护人民群众生命安全和身体健康，最大限度统筹疫情防控和经济社会发展。
The State Council's Joint Prevention and Control Mechanism released the ninth and latest prevention and control guideline for COVID-19 on Tuesday, more than a year after the previous version was published.
与第八版相比主要修订内容包括：
▌优化调整风险人员的隔离管理期限和方式
将密切接触者、入境人员隔离管控时间从“14天集中隔离医学观察+7天居家健康监测”调整为“7天集中隔离医学观察+3天居家健康监测”，核酸检测措施从“集中隔离医学观察第1、4、7、14天核酸检测，采集鼻咽拭子，解除隔离前双采双检”调整为“集中隔离医学观察第1、2、3、5、7天和居家健康监测第3天核酸检测，采集口咽拭子”，解除集中隔离医学观察前不要求双采双检。
密接的密接管控措施从“7天集中隔离医学观察”调整为“7天居家隔离医学观察”，第1、4、7天核酸检测。
According to the document, inbound travelers only need to undergo centralized isolation for seven days, rather than 14 days under the previous rule, and then spend three days in self-quarantine at home. The rule also applies to close contacts of confirmed COVID-19 patients. People who in turn are close contacts of the close contacts of COVID-infected people will go through seven days of isolation at home rather than in centralized quarantine, it added.
▌统一封管控区和中高风险区划定标准
将两类风险区域划定标准和防控措施进行衔接对应，统一使用中高风险区的概念，形成新的风险区域划定及管控方案。
The guideline also formulates new standards for listing areas deemed at risk of the virus' spread.
高风险区实行“足不出户、上门服务”，连续7天无新增感染者降为中风险区，中风险区连续3天无新增感染者降为低风险区。其他地区对近7天内有高风险区旅居史人员，采取7天集中隔离医学观察措施。
中风险区实行“足不出区、错峰取物”，连续7天无新增感染者降为低风险区。其他地区对近7天内有中风险区旅居史人员，采取7天居家医学观察措施。
低风险区指中、高风险区所在县（市、区、旗）的其他地区，实行“个人防护、避免聚集”。其他地区对近7天内有低风险区旅居史人员，要求3天内完成2次核酸检测。
The designation of high-risk area usually refers to the residence of confirmed infections and can only cover a certain residential compound. People living there are required to stay at home. Medium-risk refers to places where confirmed infected patients have visited and stayed for some time. Such an area's perimeter should be decided based on epidemiological results, instead of the previous convention of listing a whole neighborhood or village. People there are not allowed to travel outside the area. The remaining areas in a district or county that has at least one medium- or high-risk area will be listed as low risk. When people living there travel outside, they should present negative nucleic acid test results taken within 48 hours and complete two tests in three days at their destinations.
2022年4月26日，北京朝阳区居民在小关街道进行核酸检测。 魏晓昊/中国日报
▌完善疫情监测要求
加密风险职业人群核酸检测频次，将与入境人员、物品、环境直接接触的人员核酸检测调整为每天1次，对人员密集、接触人员频繁、流动性强的从业人员核酸检测调整为每周2次。
增加抗原检测作为疫情监测的补充手段，基层医疗卫生机构对可疑患者、疫情处置时对中高风险区人员等可增加抗原检测。
COVID-19 antigen tests, approved for use in China in March, have also been included in the guideline as an additional tool for grassroots-level medical institutions to screen suspicious patients and residents from medium- or high-risk areas.
▌优化区域核酸检测策略
明确不同人口规模区域核酸检测方案，针对省会城市和千万级人口以上城市、一般城市、农村地区，综合疫情发生后感染来源是否明确、是否存在社区传播风险及传播链是否清晰等因素进行研判，根据风险大小，按照分级分类的原则，确定区域核酸检测的范围和频次。
记者：王小予
编辑：李金昳
来源：中国日报 央视新闻