Crucially, however, they also reported that one dose was only 3% effective. "This would help to explain why Chile — with one of the world's most robust vaccine rollouts but 93% of the doses coming from China — has experienced a simultaneous significant expansion in cases, and a much slower decline in hospitalizations and deaths ...China vaccine is 3% effective... of course it's cheap - it doesn't work. Kind of like a Chinese electric can opener I bought off Amazon a while back - two months.