"Mystery"

Yes. Baffling. Nothing has happened over the last 2-3 years that may have had unforeseen consequences because it had never been done before and there was no long term information about it. Nothing was forced or mandated that may have impacted people's health. I don't know, I just can't piece this conundrum together. The riddle is too great for me to solve. Truly it is an enigma for the ages.