![](https://scx1.b-cdn.net/csz/news/tmb/2021/pfizer-1.jpg)
Study finds gradual increase in COVID infection risk after second vaccine dose
A study published by The BMJ today finds a gradual increase in the risk of COVID-19 infection from 90 days after receiving a second dose of the Pfizer-BioNTech vaccine.
Nov 24, 2021
7
998