Corticosteroid therapy in patients with primary viral pneumonia due to pandemic (H1N1) 2009 influenza.

Objective: During the first pandemic, some patients with pandemic (H1N1) 2009 influenza were treated with corticosteroids. The objective of this study was to assess the effect on survival of corticosteroid therapy in patients with pandemic (H1N1) 2009 influenza.

Methods: Prospective, observational, multicenter study performed in 148 ICU.