The COVID-19 superspreader in Jilin, who was engaged in a health-related marketing promotion, caused more than 100 people to be infected. Experts warned that health seminars targeting elderly people are blind spots in the epidemic prevention and control work in residential communities.
The 45-year-old male surnamed Lin, who was identified as a silent coronavirus carrier on Tuesday, was reported to have become a confirmed case on Sunday. He came from neighboring Heilongjiang Province and has traveled on trains and buses in three cities in Jilin.
Lin gave four lectures at two health clubs in Jilin's Gongzhuling and Tonghua as a self-employed marketer from January 8 to 11, causing a total of 102 people to be infected directly and indirectly, including 79 people who attended the lectures and 23 of their close contacts.
The infected people are mostly middle-aged and elderly, with an average age of 63 and the oldest being 87, said Zhang Yan, a deputy director of the Jilin Health Commission, at a press conference on Sunday.
Authorities have carried out a joint investigation into the health clubs that organized Lin's marketing promotions to determine if the clubs' operations or the products being sold were illegal or in violation of local regulations, said an official from the market supervision department of the Jilin government at the press conference.
Jilin has become one of the provinces in China worst-hit by the current outbreaks, with a total of 34 active confirmed cases and 80 asymptomatic patients.
