In late July, the Centers for Disease Control and Prevention (CDC) was investigating a deadly listeria outbreak believed to be linked to deli meats. By the end of the month, it was known that the outbreak was linked to Boar’s Head liverwurst that came from a particular plant in Virginia. The outbreak had led to the deaths of at least nine people and sickened 57 others across 18 states by the end of August. It also prompted a company recall of so…