This is the earliest source that I was able to find. Similarly, my brother's colleague's years old knee pain went away after covid vaccine. He said he heard oth

This is the earliest source that I was able to find. Similarly, my brother's colleague's years old knee pain went away after covid vaccine. He said he heard other similar stories but they are second hand references. I am interested in if there are any other similar stories and if it's something being looked into.