We still don’t have long term studies. There’s a reason it usually takes a decade or longer to develop a new vaccine. There are plenty of examples from thalidomide to bupropion and celecoxib where particular adverse events only showed up after the drug was already approved. Hell there’s a drug combination that leads to type II diabetes that was only discovered around 2011 from looking at hospital metadata and both drugs had been on the market and popularly prescribed for decades.
There’s absolutely a legitimate reason to be concerned about the lack of long term studies for these vaccines, and I’m saying this as someone who got vaccinated back in the first week of January as soon as I was eligible.
https://www.sciencedaily.com/release...0525120043.htm
"These kinds of drug interactions are almost certainly occurring all of the time, but, because they are not part of the approval process by the Food and Drug Administration, we can only learn about them after the drugs are on the market," said Russ Altman, MD, PhD, professor of bioengineering, of genetics and of medicine at Stanford.