are milk products a usual source for listeria
Foods commonly identified as sources of Listeria infection include improperly pasteurized fluid milk , cheeses ( particularly soft-ripened varieties , such as traditional Mexican cheeses , Camembert and ricotta ) , ice cream , raw vegetables , fermented raw-meat sausages , raw and cooked poultry , and cooked , ready-to-eat ( RTE ) sliced meatsâoften ...