There was wide variability in immunization rates by provider,ranging from 2.1% to 72.4% in 2008-2009, indicating that physician education and feedback are crucial to increasing rates. Of 38 obstetricians in practice at the KSC during 2008-2009, 5 did not receive the influenza vaccination. For these 5 providers, 40.6% of their pregnant patients receved influenza vaccination during the 2008-2009 season. Patients of providers who were immunized had an overall immunization rate of 36.7%,which was not a statistically significant difference.