https://www.bangkokpost.com/world/21...-sinovac-study
https://www.bangkokpost.com/thailand...-every-40-days
And..... "It has an efficacy rate of 50.4% for preventing symptomatic infection, according to data from a Brazilian trial"
https://www.medicalnewstoday.com/art...e-side-effects
So better than nothing, but I think most people would consider Sinovac as the worst of the vaccines.