Pregnancy was identified as a major risk factor for increased mortality and morbidity
due to H 1 N 1 influenza in the pandemic of 2009 to 2010 .
Pregnancy was identified as a major risk factor for increased mortality and morbidity due to H 1 N 1 influenza in the pandemic of 2009 to 2010 .
Pregnancy was identified as a major risk factor for increased mortality and morbidity due to H 1 N 1 influenza in the pandemic of 2009 to 2010 .