Comment by autoexec

They've got some evidence, 7 known cases over three states all linked to the same product. The history of problems from this producer makes it seem more likely to be true. A lot of companies would rather have their customers throw away their product and buy it again from a different batch than risk having their customers get violently sick or dead from their food because the people who get sick and survive can end up with a very strong aversion to the brand and/or product going forward, and voluntarily recalling the product just to be safe is good from a PR stance since it looks like you actually care about your customers.