I developed autoimmune inflammatory arthritis at age 49, soon after receiving the Pfizer vaccine. I'll never know for sure whether my condition was caused by the Covid vaccine or just happened to manifest soon after the vaccine. But, I was very healthy for 48 years before being vaccinated and I have no family history of autoimmune inflammatory arthritis.  

I do find it interesting that the author felt the need to call Covid vaccines "safe and effective," when the article seems to point out that the vaccines may not be so "safe" ... and everyone knows that the current vaccines are not very effective against the current Covid variants.  

Regardless, I'm glad someone is looking into this molecular mimicry issue, so we can ensure that future vaccines are as safe as possible.