Concurrent Contributed Session - Estimating the Burden of Influenza: abstract no. 441-SBACKGROUND: The years of life lost (YLL) is an estimate of the life expectancy if a person had not died prematurely from influenza to measure of the impact of influenza pandemics. However, reported estimates of YLL have typically ignored the presence of underlying chronic conditions or health risk behaviors in most individuals who died and overestimated the remaining life expectancy. METHODS: Data were available on individual pat...link_to_OA_fulltex