Purchase a box of cheap disposable plastic gloves from your local pharmacy or super-store, about $10 for a box containing 50 pairs.  Keep them close to your sewer hose storage area.  Use a pair anytime you need to connect or disconnect the waste-water hoses.  When finished, peel gloves off inside out to contain any hazardous substances and toss in the trash.  Finish up with an good ole' hand-washing or an anti-bacterial gel,  you and your hands will stay healthy and germ free.