Of course you know what I'm going to suggest ... ![](images/smilies/icon_eek.gif)
Take off the boots and waders, and treat them with a bleach solution, so that you're not taking microbes of yucky stuff (didymo, etc) with you from place to place. Spray on a simple solution on the waders, and let the boots soak in solution between stops. It won't kill them all, but it will certainly cut down on the possibilities.
Trouts don't live in ugly places.
A friend is not who knows you the longest, but the one who came and never left your side.
Don't look back, we ain't goin' that way.