In November 2020, Pfizer and Biontech announced a vaccine candidate against COVID-19. What .7 effect might...
Fantastic news! We've Found the answer you've been seeking!
Question:
![image text in transcribed](https://s3.amazonaws.com/si.experts.images/answers/2024/05/6657a91d1f507_9576657a91d1a7fc.jpg)
Posted Date: