Abstract
We aimed to estimate the influenza epidemic burden on ED attendances and hospitalizations among patients over 65y, during 2010-2015 period. Weekly numbers of visits and hospitalizations for influenza proxy-variables were modeled separately using a negative binomial regression model, including laboratory confirmed influenza identifications. Attendances and hospitalizations for acute bronchitis, pneumonia,COPD, dyspnea, asthma, acute cardiac failure, and dehydration were significantly associated with influenza positivity rate. We showed that the burden of influenza is underestimated among the elderly and should be better estimated using a dedicated diagnostic codes grouping.
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