Originally Posted by reno96teg
it's usually only good for one season, as far as i know.
when did you get the shot?
sometimes a side effect of the shot is flu-like symptoms. go figure.. :loco:
Well, immunizations carry a small doseage of the virus itself. It's small enough the body to build an immunity to. Once the body does that, it stores the virus in it's "memory" so the white blood cells can fight it quickly next time it sees it.