It’s not just the CoronaVac vaccine on offer in China. An unofficial vaccine rollout is gathering pace despite the warnings of international public health experts. In September, state-owned SinoPharm revealed that hundreds of thousands of Chinese had already taken its experimental COVID-19 vaccines as part of a state initiative to protect frontline health workers and officials traveling to high-risk nations. In the eastern manufacturing hub of Yiwu this week, hundreds of people queued for a $60 dose of CoronaVac.

“This is insane,” Adam Kamradt-Scott, associate professor specializing in global health security at the University of Sydney, says of China’s gung-ho vaccine rollout. “It is just unsound public health practice. We have previous examples of where vaccines that have not gone through sufficient clinical trials have demonstrated adverse reactions with long-term health consequences.”