Officials said the animals could have been stolen from the center, one of the top-level biocontainment labs in New Jersey -- or simply misplaced. The discovery occurred more than two weeks ago and was confirmed Wednesday after questions were raised by The Star-Ledger newspaper.
State Health Commissioner Fred Jacobs said mice infected with plague bacteria die "very fast," so "the risk to the public ... is probably slim to none."
So far no one has been reported dead from bubonic plague, so it looks like we lucked out. Emphasis on "luck."