The primary aim of this trial is to test the effectiveness of an intervention to train primary care physicians to determine if it leads to decreased parental vaccine hesitancy.

The primary aim of this trial is to test the effectiveness of an intervention to train primary care physicians to determine if it leads to decreased parental vaccine hesitancy. The investigators will train primary care teams with an initial training followed by telephone coaching and follow-up visits, and assess the outcomes of parental vaccine hesitancy (primary) and physician self-efficacy (secondary) at baseline and 6 months.

Study population:

• Eligible pediatric and family medicine practices in three counties in Washington State; King, Pierce and Snohomish Counties.
• Mothers whose infants will receive care in participating clinics.

Inclusion Clinics:

• Located in King, Snohomish, Pierce Counties, WA;
• Family practice clinics;
• Pediatric practice clinics;
• Order > 1000 doses of vaccine in 2009 from State of Washington Department of Health.

Exclusion Clinics: Not willing to be randomized.

Inclusion Mothers:

• Babies born at participating hospitals;
• Mother can be recruited before discharged post-birth;
• Mothers declare pediatric care at one of participating clinics;
• Singleton or twin pregnancies.

Exclusion Mothers:

• Babies born < 36 weeks gestational age;
• Known medical vaccine contraindications;
• Parental age < 18;
• NICU;
• Triplet or more;
• Maternal complications.