4.5 Article

Epidemiological features of influenza in Canadian adult intensive care unit patients

期刊

EPIDEMIOLOGY AND INFECTION
卷 144, 期 4, 页码 741-750

出版社

CAMBRIDGE UNIV PRESS
DOI: 10.1017/S0950268815002113

关键词

Critical care; epidemiology; hospital; influenza

资金

  1. Public Health Agency of Canada

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To identify predictive factors and mortality of patients with influenza admitted to intensive care units (ICU) we carried out a prospective cohort study of patients hospitalized with laboratory-confirmed influenza in adult ICUs in a network of Canadian hospitals between 2006 and 2012. There were 626 influenza-positive patients admitted to ICUs over the six influenza seasons, representing 17.9% of hospitalized influenza patients, 3.1/10 000 hospital admissions. Variability occurred in admission rate and proportion of hospital influenza patients who were admitted to ICUs (proportion range by year: 11.7-29.4%; 21.3% in the 2009-2010 pandemic). In logistic regression models ICU patients were younger during the pandemic and post-pandemic period, and more likely to be obese than hospital non-ICU patients. Influenza B accounted for 14.2% of all ICU cases and had a similar ICU admission rate as influenza A. Influenza-related mortality was 17.8% in ICU patients compared to 2.0% in non-ICU patients.

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