mickeyfan2
DIS Legend
- Joined
- May 21, 2004
- Messages
- 16,084
Does anybody wonder why the Polio outbreaks in the 40s and 50s were so bad? It was because the infants were no longer exposed to the Polio germs and did not build up the resistance needed to make them immune in the future. In the 20s we got "clean" and Polio cases went down as did immunity. A couple generations of kids later there was no immunity. Then Polio hit and all those clean and non-immune kids got really sick. So yes exposure to germs does build an immunity and make your body better able to fight them off.