If it's Christmas, we must be sick...

Well, we couldn't let another holiday season pass without the stomach flu. I have no idea why, but for the last four years we have all gotten and shared the stomach flu right around Christmas. On two of those occasions, we got it while visiting my brother and his family in Boston, and once we had to stay home by ourselves on Christmas. I guess lucky for everyone we got it this week, so we'll be be germ free when we go up to Boston on Saturday. I was speaking to my brother yesterday about it, and he mentioned that his family often passes around head cold type illnesses, but not stomach sickness. LOL, I guess that's only if we haven't visited to pass the germs. What's odd is that we rarely get the head cold type illnesses, just the stomach flu. Why is that?