If people who are able, keep getting flu shots, the lack of exposure theory is a moot point.
I actually hope that flu shots, and if possible, corona virus vaccines, are pushed really hard in the future. I would even say mandatory for people that can get them, but I know making things mandatory can create public resistance to the point it is detrimental.
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"A pessimist thinks things can't get any worse. An optimist knows they can."
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