Severe 2009 A/H1N1v influenza in pregnant women in Spain.

Objectives: To describe the severity of the 2009 influenza A/H1N1v illness among pregnant women admitted to Spanish intensive care units.

Design And Patients: Prospective, observational, multicenter study conducted in 148 Spanish intensive care units. We reviewed demographic and clinical data from the Spanish Society of Intensive Care Medicine database reported from April 23, 2009, to February 15, 2010.