Intensive Care UnitsIntensive CarePublic Health SurveillanceHand HygieneAPACHECross InfectionPneumonia, Ventilator-AssociatedCritical IllnessProspective StudiesIntensive Care Units, NeonatalIntensive Care Units, PediatricIntensive Care, NeonatalCritical CareHospital UnitsRespiration, ArtificialLength of StayInfant, NewbornTreatment OutcomeCoronary Care UnitsRetrospective StudiesHospital MortalityTime FactorsSepsisPatient AdmissionNursing Staff, HospitalMonitoring, PhysiologicRisk FactorsRespiratory Care UnitsInfant, PrematureHospitals, University