Which COVID vaccine is the best? Pfizer vs Moderna vs Covishield vs Covaxin?
Which COVID vaccine should I take? Pfizer vs Moderna vs Covishield vs Covaxin? Which is the best? In this post, I have tried to share the relevant information that I have accumulated which might help someone better think about and answer these questions for themselves. The first section of this post is a primer to immunology for those of us who might be unfamiliar with it, followed by a little discussion about the process of vaccine development. Finally, I summarize information that I gathered after going through phase 3 clinical trial data of COVID vaccines from four different companies and also provide decision trees for each of these, constructed from their phase 3 data. It is a long post, and if you have limited time, then you can get the gist of this post by going through only figure 2 and section 3. However, I encourage you to read it in full to better understand section 3. 1. Understanding vaccines A: Punching bag (vaccine) used to train the fighter (immune cells) B: Fight