Hand Sanitizers are not effective against Norovirus

Proper hand washing as described in the entry below is the best way to protect against norovirus.  Alcohol based hand sanitizers don't kill the virus and therefore do nothing but move the bug around on your hands.  Hand washing's  mechanical scrubbing action and rinse step effectively remove the pests and wash them away down the drain.

It's been mentioned before on this site that there is no good replacement for proper hand washing.  Hand washing with a good quality soap with added moisturizer which prevents drying will  protect against food borne illness.