IraqAbattoirsParasitic Diseases, AnimalCommunicable Diseases, EmergingFascioliasisCattle DiseasesOntarioPoultry DiseasesMilitary PersonnelMeatSeasonsWarAfghanistanCattleCombat DisordersPneumoniaHospitals, MilitaryPopulation SurveillanceBlast InjuriesVeteransLungTime FactorsStress Disorders, Post-TraumaticMilitary Medicine