Like the proverbial light at the end of the tunnel, vaccine rollout has begun around the world after a long period of COVID-19 distress.   From grim and gloom helplessness, a ray hope is at the horizon.

At the time of writing this article, about 14 lakh doses of vaccine had been administered in India, with the world total crossing a staggering 600 lakh doses.

Thankfully no alarming adverse reaction is reported as resulting from the vaccination. In this context, here are some of the frequently asked questions and our response to the same.

How is a vaccine candidate developed?