Among the 215 children, only 51 (24%) received oseltamivir (doses according to weight and age [21] ). For a large majority of them (37/47, data unavailable for three children), antiviral therapy was started directly on admission and was continued for five days (35/41, data unavailable for 9 patients). Rate of oseltamivir prescription reached 42% and 71% for children having pneumonia and for those requiring PICU admission, respectively. No significant related adverse events were reported. Oseltamivir was significantly more frequently prescribed among children older than 2 years compared to younger ones (Table 4 ) and among children with underlying disease (39/101 [39%]) versus 12/114 [11%], p < 0.0001). Additionally, 57% (123/215) of the patients were treated with antibiotics, for a median duration of seven days. In only 17 of them (14%), antibiotic therapy was discontinued after obtaining confirmation of influenza A/H1N1v infection (data unavailable for seven cases). Among children treated by antibiotics, 54% had a diagnosis of pneumonia. Finally, antibiotics were similarly used in all patients' age groups (Table 4) .