mixed cavalry

It seems that Evie and Jeremy have the same immune system. Evie has not actually been really sick since she was born. .........intermission to knock on every wood surface in the house......and Jeremy never gets sick either. At the most Evie has had a little runny nose for a day or two at a time. I always get what neither of them get, so I figure they share the same Ramer immune system whose antibodies are armed with tanks while mine are armed with mere wooden slingshots. *cough,cough, hack hack hack*