We conducted a monocentric retrospective study at the Félix-Guyon Regional Hospital, Saint-Denis, Réunion Island, from August 1, 2009 to September 30, 2009. We included 94 children with nasal and/or throat swabs tested positive for influenza A(H1N1)v during the study period. We describe the clinical, biological, and radiological presentations, the hospitalization rate, and the antiviral and antibiotic therapies. Children between six months and two years were the ones most at risk of severe forms and the first risk factor was asthma. Children with risk factors were at risk of severe forms except immune suppressed children. 7% of our cohort had only digestive signs. Recommendations for antiviral treatment were followed in 75% of the treated children. Risk factors and clinical signs, not age, guided physicians in the initiation of treatment.

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