

The journal article also shows that the affect diminished over time, presumably because the covid variant reduced in severity compared to early versions. This reduces the affect on the population and reduces the need for a vaccine. Especially a vaccine meant for a group that was never high risk to begin with.
Well sure, it reduces risk of transmission to you, and then your transmission to kids, and subsequent transmissions to vulnerable adults. But how much does it reduce the risk. When you are talking about such low risks, then you need to start considering low risks associated with taking the vaccine in the first place. What’s the value, and is it worth it. At this point in the pandemic, covid is basically a non issue, so there isn’t sufficient urgency to justify emergency approval anymore.