If it's a party-platter sandwich from Roche Bros. or Sudbury Farms, and you got it between July 31 and Aug. 2, get a bag now and throw it out. The state Department of Public Health reports the sandwiches, typically sold in party platters, could contain an unlisted ingredient: Listeria monocytogenes.

Sample party platter of doom (from DPH):

Listeria does not affect most people, but can cause serious problems in the elderly, newborns and people with compromised immune systems, starting with flu-like symptoms, the state says. It can also cause pregnant women to miscarry.

The FDA says about 285 pounds of potentially infected sandwiches were distributed by World Class Canapes, Inc. of Wilmington.