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In the new corona epidemic, “super transmission” incidents involving more than one person have occurred frequently. In January this year, more than one hundred people were spread by one person in Jilin province, raising widespread concern. According to previous reports, from January 6 to 11, the “super communicator” Lin Mou traveled to and from Heilongjiang and Jilin provinces several times and carried out four marketing and promotion activities for middle-aged and elderly people in the cities of Gongzhuling and Tonghua in the form of centralized training. —— 1 event in Gongzhuling city, 38 participants, 3 events in Tonghua city, 107 participants. A total of 145 people.
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Lin is reported to sell linseed oil, and through the process of “street gift registration, create a WeChat group, participate in egg-giving activities, 1 person with multiple gifts can be upgraded,” summoned a large number middle-aged people. and seniors to “hear the class”, and many seniors are accidentally fooled by these free eggs.
The latest “Chinese Center for Disease Control and Prevention Weekly Report” shows that, as of January 31, the “super spread” incident in Jilin has caused at least 141 related cases of infection. Among them, the COVID-19 attack rates of the participants in the three seminars of medical devices reached respectively. 90% (36 people who participated in 40 people were infected), 90% (28 people who participated in 31 people were infected), 38% (10 people who participated in 26 people were infected), and most were older people, a 76% (74 people).
According to the survey, Lin is 44 years old and is a health care product promotion lecturer from Heilongjiang. He travels frequently. From December 23, 2020 to January 3, 2021, Lin took train and plane to Shandong, Shanxi, Henan, and Heilongjiang.
On January 5, Lin took the K350 train and sat next to two of the four confirmed cases in Wangkui County, Suihua City, Heilongjiang.
On January 9, Lin arrived in Tonghua City, Jilin Province. Over the next two days, he gave 3 training lectures at Venue A, each lasting approximately 2.5 hours. The classroom was about 30 square meters and the doors and windows were closed. During this period, Lin did not wear a mask, ate in a small restaurant, and had contact with the outside world.
At noon on January 10, Lin went to a pharmacy due to muscle aches and other symptoms, and her temperature was normal when measured at the pharmacy.
A total of 97 participants attended the 3 conferences, with 40 and 31 participants respectively. 26 people, most of them retired, 61% women (59) and the median age was 72 years (60-87 years).
Due to the older age of the participants, the proportion of severe and critical cases is high. At the end of January, 47 serious and critical cases had been reported, representing 15.2% of the total. An 87-year-old case died on January 25.
In addition, Lin also infected at least 7 other contacts, including 5 employees at site A. Among them, Ms. D and Lin were in the same hotel with adjacent rooms. Ms. E was a clerk at Lin’s restaurant, and Lin was on lunch twice with this.
Lin’s close contacts spread the virus during other conferences, shopping, playing mahjong and other activities, infecting more than 30 cases.
In summary, as of January 31, Lin directly infected 81 cases (first generation cases) in Dongchang District, Tonghua City, and indirectly infected at least 60 cases (second and third generation cases).
It is particularly worth mentioning that Lin has experienced muscle pain, indicating that he may be in the initial stage of a new infection of the crown when he delivered a speech on January 10-11, and the initial stage is considered the most contagious .
