Farnhamia wrote:Saint Clair Island wrote:Techno-Soviet wrote:
I always thought it had something to due with immunity 'going away' after a few years. =\
Combination of the two, I'd imagine.
Well, and a mutated virus presents differently to the immune system so it doesn't have the defenses ready to go.
Thus, you're immune to the flu -- but only the old version.
So I guess it's inaccurate that the immunity wears off; the virus just changes. As someone said just three posts ago.









