There's one, although it doesn't specifically mention hummus. Here's what it does say (in brief) about listeriosis:
How does Listeria get into food?
Listeria monocytogenes is found in soil and water. Vegetables can become contaminated from the soil or from manure used as fertilizer. Animals can carry the bacterium without appearing ill and can contaminate foods of animal origin such as meats and dairy products. The bacterium has been found in a variety of raw foods, such as uncooked meats and vegetables, as well as in processed foods that become contaminated after processing, such as soft cheeses and cold cuts at the deli counter. Unpasteurized (raw) milk or foods made from unpasteurized milk may contain the bacterium. Listeria is killed by pasteurization and cooking; however, in certain ready-to-eat foods such as hot dogs and deli meats, contamination may occur after cooking but before packaging.
Recommendations for persons at high risk, such as pregnant women and persons with weakened immune systems, in addition to the recommendations listed above:
-Do not eat hot dogs, luncheon meats, or deli meats, unless they are reheated until steaming hot.
-Avoid getting fluid from hot dog packages on other foods, utensils, and food preparation surfaces, and wash hands after handling hot dogs, luncheon meats, and deli meats.
-Do not eat soft cheeses such as feta, Brie, and Camembert, blue-veined cheeses, or Mexican-style cheeses such as queso blanco, queso fresco, and Panela, unless they have labels that clearly state they are made from pasteurized milk.
-Do not eat refrigerated pâtés or meat spreads. Canned or shelf-stable pâtés and meat spreads may be eaten.
-Do not eat refrigerated smoked seafood, unless it is contained in a cooked dish, such as a casserole. Refrigerated smoked seafood, such as salmon, trout, whitefish, cod, tuna or mackerel, is most often labeled as "nova-style," "lox," "kippered," "smoked," or "jerky." The fish is found in the refrigerator section or sold at deli counters of grocery stores and delicatessens. Canned or shelf-stable smoked seafood may be eaten.
Me again. I typed hummus + listeriosis into google and came up with a bunch of pdf files detailing outbreaks of listeriosis and hummus recalls. I can link them if you want, but I wasn't sure linking pdf files was ok here? Sometimes people don't like links that aren't straight 'net.
I've never heard of that regulation on cheese. Can I lob the ball back in your court and ask for a source?
Stop & Shop regularly carries cheese that isn't pasteurized, to my knowledge. Unless it says pasteurized on the label, I'm hesitant to assume it's pasteurized. I've seen some soft cheeses, such as mozzarella, specifically labeled "pasteurized," and have bought others that are imported from France and have exactly the same labels as the ones I bought when I lived in France, which weren't made from pasteurized milk.