DEERFIELD, Ill. — The typical flu season always coincides with the busiest travel period of the year, and last season that spelled trouble for more than 3 million U.S. vacationers whose trips were interrupted by flu-related illness, according to the "Walgreens Flu Impact Report" released Tuesday.
The findings in part two of the survey examining the effects of influenza on people's everyday lives, released today, showed how the flu affected Americans' vacations, holidays, social engagements, sporting events and more.