Impact of pandemic A/H1N1/2009 influenza on children and their families: Comparison with seasonal A/H1N1 and A/H3N2 influenza viruses

Perceived symptom severity and the risk of serious outcomes are similar in children with influenza due to pandemic A/H1N1/2009 or seasonal A/H3N2 influenza, but both of these viruses seem to have a greater clinical and socioeconomic impact than seasonal A/H1N1 virus, regardless of the patients' age or gender.