The Food and Drug Administration has closed an investigation into a listeria outbreak that killed one person and sickened 10 in several western states, health officials announced Thursday.

The Food Safety Authority of Ireland (FSAI) is investigating what it describes as an "extensive outbreak" of the bacterial infection, which has been linked to one death and identified nine confirmed cases. Hundreds of ready-made products have been removed from supermarket shelves in what has been described as a "full precautionary recall".

Jewel-Osco recalls deli items including tuna salad over potential listeria risk reported by NBC and Fox 32 Chicago.

Two Food Safety Authority (FSAI) prohibition orders were first issued due to potential ­concerns around listeria contamination in two Ballymaguire Foods ­products last week and at the end of June.

Amid a precautionary food recall of around 200 ready-to-heat meals linked to an extensive outbreak of listeria, here is a look at what the bacteria is and what its symptoms are.

Members of the public have been to warned to be on alert following a major recall of ready-made food products sold in a range of Irish shops including Centra, Supervalu, Tesco and Aldi