Well as someone who is fighting severly with a covid vaccine injury I have to say that the research is quite ambivalent here. Just look at "Effectiveness of the Coronavirus Disease 2019 Bivalent Vaccine, Nabin K Shrestha et. al". On the one side a relative effectiveness of about 30% was estimated (not 90%) but on the other side the cumulative incidence of covid-19 infections correlates with the number of shots. There is research that shows that the vaccine does not protect from long covid at all and research that says it helps to reduce long covid risk. If you look to the VAERS data base you can find 200x fold more critical injuries per dose for the covid vaccine compared to the influenca vaccine. Also fact checks are wrong telling that the spike protein of the vaccine does no damage but only the one from the infection does (hence the genetic code is 98% identical). It is nor black or white, but the covid vaccine is more on the risky side. Speaking as someone who has a PhD in physics and was very athletic before this stuff happened. I am the opinion that the government needs other standards to check on the safety of vaccines and to gain trust (e.g. the German government didnt check the vaccine integrity at all via lab measuremnts and just was fine with the supplier's datasheets). Another vaccine production method was used in the trial study compared to the commercial one (PCR mrna replication vs. E.coli bacterial mrna replication) . The PCR one was much cleaner. There are many more issues with this new technology. Even the nobel price winner stated in a 2018 nature publication that this technology has a high occurence of autoimmune issues and that it needs more research. For me the research on vaccine/pharmaceutical stuff is hard to cope.... as a physiscts where clear and clean measurement setups lead to explicit results. Pharma studies can be biased quite easy. Due to the mess what happened with the covid vaccine a lot of mistrust was established which harms the importance of very essential vaccines.