During this A/H1N1v flu wave, children and young adults were identified as a particular risk group. They presented a higher attack rate than older adults [6] and a greater mortality rate than previously observed with classical seasonal flu [7, 8] . Several reports on influenza A/H1N1v in pediatric settings have now been published [9] [10] [11] [12] , but information on clinical presentation and severity of infection in European children remains limited [13] [14] [15] . However, these data could be of the great interest to guide future recommendations for vaccination and antiviral therapy during forecoming flu seasons.