3rd Shots
In the UK they are already planning third vaccine shots from 4Q2021. It appears the plan is for annual vaccinations for flu and COVID to go together. Not in the same jab of course.
I deliberately avoided Sinovac for several reasons, but the important one is I personally (my opinion only) have no faith in the vaccine or the company behind it, and felt there would jurisdictions that would not treat Sinovac takers the same way as others. As I travel(led) frequently that is an important consideration.