We have few variants of vaccine namely Sputnik - V, Sinopham , Astrazeneca, CanSino BIO and Sinovac.
Which of these Covid 19 Vaccine is the best with least side effects and more effective protection against covid-19 ?
This link posted by @Shamm and I think this is suitable to your thread this is all about the vaccine..
https://bitcointalk.org/index.php?topic=5347892.0