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I would be worried about:

* An increase in autoimmune diseases (related to the hygiene hypothesis).

* Decreased resistance to future viral pandemics, since the body wouldn't have practice since childhood in fighting viral disease.



On the other hand viral infections themselves can instigate autoimmunity. After all, your body now has to fight your own cells (in contrast to other foreign infection)


Yep, hard to know for sure which way it would go.




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