Hospitalized children with influenza A H1N1 (2009) infection: a Spanish multicenter study.

Objectives: Even though the majority of cases of influenza A H1N1 (2009) in children are mild, severe complications have been reported. Our objective was to describe the Influenza A H1N1 (2009) complications in pediatric population in Spain.

Methods: This was a multicenter descriptive study including patients younger than 14 years attending 15 emergency departments and hospitalized with laboratory-confirmed influenza A H1N1 (2009) infection from August to December 2009.