ListeriosisListeria monocytogenesFood MicrobiologyMeningitis, ListeriaFoodborne DiseasesListeriaCheeseFood ContaminationDisease OutbreaksMeat ProductsCucumis meloPregnancy Complications, InfectiousApium graveolensAbortion, SepticFood Service, HospitalSerotypingInfectious Disease Incubation PeriodRibotypingPregnancyCitrullusElectrophoresis, Gel, Pulsed-FieldInfant, Newborn