Fig. 3From: Influenza epidemiology and influenza vaccine effectiveness during the 2015–2016 season: results from the Global Influenza Hospital Surveillance NetworkAdjusted odds ratio (aOR) by age group and strain. Adjusted by age, sex, socioeconomic class, number of chronic conditions, vaccination status, time from onset of symptoms to swabbing, and site. Abbreviation: CI, confidence intervalBack to article page