I suppose the answer is, if you have a strong immune system then it should be able to take care of anything thrown at it. Dee
-------Original Message------- Final note,.......... a few years back me, my son, and two of his friends were building a dam on a creek. The water was crystal clear. We all drink some. The other two got sick but me and my son did not. Recently my son and two of his friends ate someplace. They got food poisoning but my son did not.