A broccoli product sold at Walmart in Michigan was under recall. Now the FDA says the product may be considered deadly. Here's what to know.

Bags of broccoli florets that were sold at Walmart stores in 20 states are affected by a Class I recall due to concerns over possible listeria contamination.

A recall was issued for Marketside Fresh Broccoli Florets, a brand of 12-ounce washed and ready to eat broccoli florets sold at Walmart, in Louisiana and 19 other states.