We report the cases of two pregnant Caucasian women <*> with no preexisting illness ,
the significant association with myocardial involvement in both women demonstrates the increased risk of exposure to H 1 N 1 influenza virus in pregnant women .
We report the cases of two pregnant Caucasian women ( aged 29 and 30 ) , with no preexisting illness , presenting with respiratory manifestations of H 1 N 1 influenza virus infection in their third trimester .
While it is not possible to ascertain retrospectively if myocarditis was caused by either infection with H 1 N 1 virus or as a result of pregnancy ( in the absence of endomyocardial biopsies ) , the significant association with myocardial involvement in both women demonstrates the increased risk of exposure to H 1 N 1 influenza virus in pregnant women .