Perhaps because they thought BROILED CHICKEN LIVERS meant that it was cooked?

Definition – Broiled:

1. Cook (meat or fish) by exposure to direct, intense heat: “he broiled a wedge of sea bass”; “a broiled sirloin steak”.

According the CDC, in August 2011, CDC identified a sustained increase in the number of Salmonella Heidelberg isolates with the outbreak strain reported to PulseNet from New York and New Jersey. From April 1 to November 4, 2011, a total of 157 illnesses were reported in New York (93 cases) and New Jersey (64 cases). On November 8, 2011, Schreiber Processing Corporation, of Maspeth, New York, announced a voluntary recall of an undetermined amount of “kosher broiled chicken liver” products. Maryland health officials have received reports of nine cases linked to the outbreak, including seven adults and two children. The Pennsylvania Department of Health (PDH) has confirmed seven outbreak-related cases that occurred from April through August. Minnesota Department of Health counts one. The total ill is 174.