Researchers reported in the American Journal of Epidemiology that 10- to 19-year-olds and 20- to 29-year-olds in Canada contracted seasonal flu during the 1995 to 2006 period almost one week earlier than older adults and young children. Data showed that teens and preteens also had the infection earlier than others during the 2009 H1N1 epidemic. Researchers said that the data weren't sufficient to explain why teens and young adults appear to lead the way in flu outbreaks.

Full Story:

Related Summaries