This article really beats around the bush before ultimately getting to the problem:
My question is, why is ANYBODY taking a vaccine made in China? Are you kidding me? I hate to so much as buy electronics made in China, I can't even imagine taking a vaccine manufactured there. Those numbers are terrible and significantly worse than than natural immunity.There have also been questions raised about vaccine efficacy, given Chile’s widespread use of CoronaVac, the coronavirus vaccine manufactured by Chinese firm Sinova...
A study published by the University of Chile earlier this month reported that CoronaVac was 56.5% effective two weeks after the second doses were administered in the country. Crucially, however, they also reported that one dose was only 3% effective.