How to choose a vaccine? AZ or Modena? Explore the secret of vaccine protection rate!

Halfway through 2021, but the epidemic is still raging. At this time, the focus of public attention is naturally on the “vaccine.”Before discussing what vaccine to administer, we want to discuss a question that has puzzled everyone for a long time. Is a vaccine with higher protection better? There are four familiar vaccines, namely BNT, Modena, AZ, and Johnson &…