Some packages of Walmart-sold broccoli florets have been recalled by its manufacturer. The FDA has designated the recall as a Class I, the most serious category.

Braga Fresh, based in California, issued a product warning for Marketside Broccoli Florets, the FDA announced last year. It's now labeled deadly.

Listeria monocytogenes. On Jan. 27, the FDA issued a notice which labelled the broccoli recall a Class 1 recall, the highest level recall where the product could pose a serious health risk and even death.