Here is what you need to know about the deadly listeria outbreak, including which products are being recalled.

Two Connecticut residents were infected by listeria connected to the supplemental milkshakes, but have since recovered.

Supplement shakes distributed to hospitals and long-term care facilities have been recalled due to possible listeria contamination that is also linked to 12 deaths. The Food and Drug Administration says the recall is being instituted by Lyons Magnus LLC, which is recalling 4 oz. Lyons ReadyCare and Sysco Imperial Frozen Supplemental Shakes.