>Maybe the problem with the US is the number of people who buy meals from restaurants, as opposed to cooking at home. If there's a problem in your own kitchen the only people who are going to get sick are members of your family; if there's a problem in a restaurant, or a restaurant chain, you have an outbreak.

The problems come from contaminated ingredients. Modern, industrialized food supply chains are long, whether they terminate in a commercial kitchen or a residential one.