RESULTS
There were 242 individuals who met inclusion criteria from the 2017/2018
influenza season and 115 individuals from the 2018/2019 season
(Supplemental Table 2). Overall, patients were predominantly female,
obese, and vaccinated against influenza. More individuals experienced
ICU admission (13.0% vs. 6.2%; p=0.031) and mechanical ventilation
(16.5% vs. 9.9%; p=0.074) in the 18/19 influenza season than the
preceding season. Overall characteristics of values included in the
clustering algorithm are shown in Table 1.