On the morning of June 29, when Wuxi City conducted an investigation and traceability of the two previously notified positive infected persons, it was found that one positive infected person and two people from Si County, Anhui Province came to tin at the construction site of Weifu Company on June 25. At the intersection of work, the results of gene sequencing show that it is highly homologous to the genome sequence of this epidemic case in Si County.

After verification, the two people who came to tin from Si County have been quarantined and controlled in a centralized manner on June 28, and the nucleic acid was initially screened positive at noon on June 29.

In the nucleic acid test of their close contacts at the centralized isolation point, 5 people were initially screened positive, all of whom were co-workers.

On the afternoon of the 29th, the city CDC checked that all 7 people were positive, and they were immediately transferred to the city's designated hospital for diagnosis and treatment.

　　As of 22:00 on June 29, 232 close contacts and 317 semi-secrets of the 7 positive infected people have been investigated, and relevant control measures have been implemented. Nucleic acid test results have been obtained for 114 people, all of which are negative, and the remaining results are pending; 454 items and environmental samples were collected from relevant places, and 390 results have been obtained. Among them, 9 samples from the work and living areas of the positive infected persons were positive, and the rest of the results were negative.

　　According to the information of the flow and adjustment that has been obtained, the activities of the relevant personnel in the tin mainly involve the following places:

　　June 23

　　Wuxi Bus Terminal, No. 711 Bus Dongbeitang Station, Yunlin Street Leather City North Gate Timber Market Parking Shed

　　June 24

　　Yunlin Street Leather City North Gate Timber Market Parking Lot Work Shed

　　June 25

　　Yunlin Street Leather City North Gate Wood Market Parking Shed, Ximanyuan Canteen in Leather City, Wuxi Weifu High-Tech Group Co., Ltd., China Textile Pharmacy

　　June 26

　　Yunlin Street Leather City North Gate Timber Market Parking Lot Workshed, Leather City Ximanyuan Canteen

　　June 27

　　Yunlin Street Leather City North Gate Timber Market Parking Shed, Jiangsu Xinqiujing Stainless Steel Co., Ltd.

　　(Headquarters reporter Li Xiao and Bao Yuyang)