A January 2021 news article reported that Shanghai-based vaccine expert Tao Lina had uploaded a digital version of the vaccine’s manual to the web.
The manual listed the vaccine’s 73 local and systemic side effects, leading Tao to describe the vaccine as the “most unsafe vaccine in the world.” However, the number of side effects that the manual lists is not, in itself, an indication of the vaccine’s safety.
Taiwan News reported that censors took Tao’s post down in early January and that 2 days later, Tao retracted his criticism, saying that it was a joke.
Some individuals have also aired concerns over the vaccine’s efficacy. In April 2021, a Chinese official called Gao Fu said that the country’s COVID-19 vaccines “do not achieve very high protection rates.” Gao, head of the Chinese Center for Disease Control and Prevention, later claimed that people had misinterpreted his comments.