A listeria outbreak that has reached 13 states and involves three deaths has been linked to chicken Alfredo dishes recalled from Walmart and Kroger, the nation’s two largest grocery sellers. Here’s what was announced Tuesday night by the USDA’s Food Safety Inspection Service:

The chicken dishes could be linked to a possible outbreak strain of listeria associated with three deaths and one fetal loss.

Some ready-to-eat meals sold at Walmart and Kroger are being recalled after multiple deaths and more than a dozen illnesses reported across 13 states due to listeria poisoning, according to the U.S. Department of Agriculture’s Food Safety and Inspection Service.