Third person in US dies in listeria outbreak tied to Boar's Head deli meats

FILE - This 2002 electron microscope image made available by the Centers for Disease Control and Prevention shows a Listeria monocytogenes bacterium, responsible for the food borne illness listeriosis.

Three people have now died in a listeria food poisoning outbreak linked to Boar's Head deli meats, U.S. federal food safety officials announced Thursday, and the overall number of people sickened rose to 43.