Is there any evidence so far that immunity has any longevity?
We're certainly not immune to influenza even after having it numerous times through ones life.
Isn't that because it'll always be different strains of influenza?
This will also mutate, no?
@SwissChap started
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Is there any evidence so far that immunity has any longevity?
We're certainly not immune to influenza even after having it numerous times through ones life.