Vigilància epidemiològica dels casos greus hospitalitzats confirmats de grip. Xarxa sentinella PIDIRAC (Catalunya 2010-2015)
Introduction: the Information Plan for Acute Respiratory Infections in Catalonia (PIDIRAC) incorporated the surveillance of severe confirmed influenza hospitalized cases (CGHCG) in 2009. The objective of the study is to portray the clinical, epidemiological and virological features of the CGHCG registered in 12 sentinel hospitals during 5 influenza seasons. Method: the sample consists of the CGHCG registered during 2010-2011 to 2014-2015 influenza seasons. The confirmation technique used was PCR and/or viral isolation in cell culture from respiratory sample. Results: 1400 CGHCG were registered, of which 33% required admission to ICU and 12% were exitus. The mean age of cases was 55.2 years (SD: 26.7 years), range of 0-101 years. 70.8% were not vaccinated; 87% received antiviral treatment, in 80.4% and 24% of the cases before 48 hours of admission and of beginning of symptoms, respectively. 87,7% of the cases identified influenza virus A (37,9% AH1N1pdm09, 29,3% AH3N2). Conclusions: surveillance of CGHCG provides an estimation of the severity of seasonal influenza epidemics allows to identify and characterize at-risk groups to adopt preventive measures (vaccination) and early antiviral treatment.
Flu; Surveillance; Epidemiology; Antivirals; Vaccine
Torner-Gràcia N, Martínez-Mateo A, Basil L, Plasenci E, Barrabeig-Fabregat I, Follia-Alsina N, et al. Vigilància epidemiològica dels casos greus hospitalitzats confirmats de grip. Xarxa sentinella PIDIRAC (Catalunya 2010-2015). Butll Epidemiol Catalunya. 2016 Oct; 37(10):234-240.
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