My parents NEVER get sick. The also rarely wash their hands and travel a lot. Before my phobia I was the same way. My mom had a sv* once when I was in elementary school, I've never known my dad to have one and I went about 13 years without coming down with one. They go to Costco a lot, never wipe the handles of the carts, eat the samples while picking up meat from the meat section and never give it a thought! To make it worse, as a kid my mom never made me wash my hands in the restroom and I don't ever recall her washing her own hands. We went to Disney every year and were always footloose and fancy free - with dirty hands! I NEVER washed my hands before eating unless I was at my grandmother's house and she made me. We are all 3 O blood types, so YES I do believe that they aren't as easy to contract as we believe.