I don't have any data to back this up, but I'm under the impression that the (vast?) majority of cases of food borne illness is caused by poor sanitation and cross-contamination (regardless of whether it's at the farm, a processor, the market, or in the kitchen), and that relatively few of the cases are caused by (intentionally) raw or undercooked foods listed on the pictured warning.For example, of the people I know there is only a couple of cases I can recall where they were sickened by undercooked food (both were oysters), compared to dozens of cases caused by bad food handling (frequently at salad bars - one case was nearly fatal).