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 ?
Sputnik-V and Astrazeneca do have a bad reputation right now, so it is definitely not part of the bests. Sputnik-V is even proven to be not safe, so beware.