Exactly--who really knows?
"They don't really trust it themselves," said Therese Hesketh, an expert on China's healthcare system at University College London. "They really did a rush job on the vaccine and the clinical trials have never been properly scrutinized. I'm aware from colleagues in China that there's huge vaccine hesitancy anyway."
"Chinese vaccine developers have been repeatedly criticized for a lack of transparency and lag foreign peers in publishing full trial data in peer-reviewed medical journals. The weekend study out of Sinovac vaccine's late-stage trial in Brazil came three months after its first efficacy readouts, while state-owned Sinopharm has yet to publish full data from phase 3 trials for its two inactivated Covid vaccines."
GROWING CONCERN