Do We Make You Sick?

Last year when we went to Arizona, Mike's Mom got so sick of us she ended up in the hospital. Ok, that might not be quite what happened but now I am wondering. This time we took my sister with us. Guess what!? She started feeling a bit under the weather our last day there and after getting back to Wyoming, she also ended up in the hospital. She is improving but good grief! Is it us? Anyone want to vacation with us?