Disease Migration with Three Kids

A few weeks ago, we went to the Magic House with Davis, Alex and Evan.  We had a great time there, but I'm pretty sure Alex picked up his first serious cold there.  Both Alex and Evan have had a lot of congestion, high temperatures and general cold symptoms that turned into ear infections and required anti-biotics.  Its taken about two weeks, but everybody who has been in our house has slowly gotten this cold.  This made me realize that with three kids, we'll be in a pattern like this for the next few years: