My sister had a little run of stomach flu run throught her house last week. My mom is coming to visit this weekend and is staying at my sister's house...is it safe to go there yet? Could someone in her family still have it? How long after someone is exposed do they have before they are sick from it? I've heard different things about this. My mom says you'd have it within a couple days, and my sister within a couple weeks. So whose right? I don't want to miss being with my family for Christmas! Anyone know? Is the scare over...or should I still fear the kids in her house?