According to Jinyun News at 3:30 on the 9th, it was learned from the Tianjin Municipal Epidemic Prevention and Control Headquarters that at 24:00 on January 8, the Tianjin Municipal Center for Disease Control and Prevention completed the whole genome sequencing of the new coronavirus in Tianjin with two new local cases. After analysis and comparison, and confirmed by the Chinese Center for Disease Control and Prevention, the two indigenous cases of the new coronavirus belong to the VOC/Omicron strain (BA.1 evolutionary branch), which belongs to the same transmission chain, and the sequence of the Omiljung variant strains found in Tianjin cannot be confirmed as the same transmission chain.
Zhang Ying, deputy director of the Tianjin Municipal Center for Disease Control and Prevention, said at a press conference on epidemic prevention and control that no history of the first two cases was found to have a history of living outside Tianjin. Through the circulation of these two cases, it was found that the care class where the adult case worked and the primary school where the child was located, and the epidemiological association had been developed through other cases.

At present, 20 infection cases are all in the same chain of transmission, but since the two cases initially found have no travel history outside Tianjin, and the sequence of the Omiljung variant that has been found in Tianjin cannot be confirmed as the same chain of transmission, how the tianjin epidemic was infected is still unknown.
Fifteen of the 20 infected people were primary and secondary school students, with two transmission chains in custodial classes and primary schools
The first case found in the Tianjin epidemic was a staff member of a childcare and auxiliary institution, who had not left Tianjin for 14 days, and after experiencing symptoms, went to Jinnan Hospital for nucleic acid testing and found that the result was positive. The second case was a student of Xianshuigu No. 7 Primary School in Jinnan District, who had not left Jinnan for 14 days and went to Jinnan Hospital for fever clinic treatment, and the nucleic acid result was positive.
On the evening of January 8, the Tianjin Municipal Epidemic Prevention and Control Headquarters announced the details of 20 positive cases. The reporter found from the details of the case that among the 20 positive cases, 1 was a staff member of the childcare institution, 15 primary and secondary school students, and 4 student family members. Among the 20 cases currently confirmed, there are mainly two chains of transmission: 8 are students of Xianshuigu No. 7 Primary School (including confirmed case 2), and confirmed case 2 are classmates; 2 Xinzhuang Middle School students, 4 Gaozhuangzi Primary School students, and 4 custody class students' families are related to confirmed case 1.
According to the notice of the Epidemic Prevention and Control Headquarters of the Tianjin Municipal Education Commission on the 8th, from now on, all off-campus education and training institutions (disciplines and non-disciplines), vocational training institutions, adult training institutions, and custodial service institutions in the city will suspend any form of offline training services and custody services, and the specific recovery time of the city will be notified separately.
From 7 o'clock today, Tianjin carried out nucleic acid testing for all employees
According to Circular No. 2 of 2022 issued by the Tianjin Municipal Epidemic Prevention and Control Headquarters in the early morning of the 9th, from 7 o'clock on January 9, all residents of Jinnan District, Nankai District, Dongli District and Xiqing District remained relatively static in the same place of residence at that time, and according to the overall deployment of the prevention and control headquarters of each district and the organizational arrangements of the street (town) community (village), they went to the designated location and cooperated in a timely manner to carry out nucleic acid testing. Complete the nucleic acid testing of personnel in the region within 24 hours.
Since 7:00 a.m. on January 10, all residents of the other 12 districts, whose places of residence at that time remained relatively static, went to designated locations to cooperate in time for nucleic acid testing in accordance with the overall deployment of the prevention and control headquarters of each district and the organizational arrangements of street (town) communities (villages). Complete the nucleic acid testing of personnel in the region within 24 hours.
The circular mentions that if the residents of the relevant districts do not participate in the nucleic acid test within the specified time, the "health code" is adjusted to the "orange code", and after the nucleic acid test is completed and the result is negative, it is changed to the "green code".
Cases have been transmitted for at least three generations and may have been community-based
Zhang Ying introduced that from the perspective of the relationship between the cases and the chain of transmission, the 18 cases have been transmitted for at least three generations, and although the epidemic was discovered in the early morning this morning, it is possible that it has been continuously spread in the community for a period of time. Therefore, for the trend of this epidemic, it is not excluded that there may be other positive infections in addition to the sealing and control area, the control area and the prevention area. With the nucleic acid screening of all the staff in the three districts this afternoon, there is a possibility that more positive infected people will be found.
Non-essential not to leave Tianjin, Tianjin these people give red codes and orange codes
On the evening of the 8th, according to the notice (No. 1) of the Tianjin Municipal Novel Coronavirus Pneumonia Epidemic Prevention and Control Headquarters, the vast number of Tianjin citizens should not leave Tianjin unless necessary. Party and government organs at all levels, enterprises and public institutions, etc. have taken the lead in implementing the non-essential requirement of not leaving Tianjin.
On the same day, the Jinnan District Epidemic Prevention and Control Headquarters issued a notice saying: Bishui Century Garden in Xinzhuang Town, Huayuan Boston Shangdongxuan, Xinyu Garden, Lin Jin Garden, Yijia Garden, Xinwangli; Xinxiang Garden, Xinxu Garden, Xinyang Garden, Jincai Garden, Fengda Garden, Zhonghuili, Zijiang Xinyuan, Yihuali, Nanhuali, Longhu Zichen, Gu Xingli, Dongwang Homestead, Baoye Xinyuan, Gushang Jiangnan, Hechangyuan, Huiyuanli, Junhui Famous Residence, Shui'an Huating; Zhaohe Garden in Shuangqiaohe Town; Huilin Garden in Xiaozhan Town; and Shangli Garden in Beizhakou Town are sealed areas. Implement control measures for area closure, staying at home, and door-to-door service in the sealing and control area. Nucleic acid testing is performed regularly. The health code is given a red code.
Xinzhuang Town and Xianshuigu Town (except for the area of sealing and control) in Jinnan District are the control areas. Health codes are given orange codes.
Jinnan District is surrounded by Haihe River, Outer Ring South Road, Tianjin-Port Expressway (including liaison line), Tangjin Expressway and Shuangqiao River (except sealing and control areas and control areas) as the prevention area. Health code green code.
In addition, in the early morning of the 9th, Tianjin Metro issued an operation announcement: according to the needs of epidemic prevention and control, from January 9, 2022, the operation section of Metro Line 1 will be adjusted to "Liuyuan Station to Shuanglin Station", and all stations between "Lilou Station and Donggu Road Station" will be temporarily closed; all stations in the second phase of Metro Line 6 will be temporarily closed.
Editor: Sun Baoguang