Our findings suggest secondary acceptance of HPV vaccination is common, with more than two-thirds of parents in this national sample accepting or intending to accept HPV vaccination after declination. Providers should seek to motivate secondary acceptance by delivering repeated, high-quality recommendations for HPV vaccination.

We examined how prenatal exposure to breastfeeding information from various media sources, maternal knowledge of benefits, family and clinician support, and peer practices influence breastfeeding outcomes in early infancy. Initiation of breastfeeding, any breastfeeding at two months, and exclusivity of breastfeeding at two months were examined in a cohort of US women using data from the Infant Feeding Practices Study II. Descriptive statistics, chi-square analyses and logistic regression were conducted. Approximately 85 percent of the women initiated breastfeeding. At two months, 63.8 percent continued breastfeeding, while only 38.1 percent breastfed exclusively. Mothers with greater knowledge about breastfeeding benefits were 11.20 (95%CI: 6.87–18.45) times more likely to initiate breastfeeding and 5.62 (95% CI: 4.19–7.54) times more likely to breastfeed at two months than those with lower levels of knowledge. Women whose families prenatally supported exclusive breastfeeding were 8.21(5.12–13.2) times more likely to initiate and continue breastfeeding (OR 3.21, 95%CI: 2.51–4.11). Clinicians who supported breastfeeding only also increased the odds of a woman initiating breastfeeding (OR 1.95, 95% CI: 1.31–2.88). Interventions to increase maternal knowledge of breastfeeding benefits and family and clinician support of breastfeeding in the prenatal period may help increase breastfeeding rates. The encouragement of breastfeeding needs to be a priority among health care providers to improve the health of mothers and infants.

Conflicts of interest: G.D.Z. has received consultation fees from Sanofi Pasteur for work on the Adolescent Immunization Initiative and from Merck for consultation related to human papillomavirus vaccination. N.T.B. has served on paid advisory boards for Merck and received research grants from Merck and Pfizer. The remaining authors have no conflicts of interest to disclose. Disclaimer: The findings and conclusions in this commentary are those of the authors and do not necessarily represent the official position of the Centers for Disease Control and Prevention.

Objective While socioeconomic status (SES) and race/ethnicity are known predictors of breastfeeding practices, the added disparity caused by the rising rates of obesity among women of childbearing age remains untested. The purpose of this study was to examine differences in breastfeeding initiation and duration among black, white and Hispanic women of low and middle SES within the context of prepregnancy body mass index (BMI). Methods Data from the Early Childhood Longitudinal Study-Birth Cohort were analyzed. Adjusted logistic regression models were built to examine differences in breastfeeding initiation and duration for the three racial/ethnic groups of low and middle SES. Results Normal BMI Hispanic women of low SES demonstrated higher rates of breastfeeding initiation (74 %) compared to other groups. Overweight/obese black women of low SES had lower rates of breastfeeding initiation. Overweight/ obese Hispanic women of middle SES were significantly less likely to continue breastfeeding up to 4 months (OR: 0.65, 95 % CI: 0.41, 0.98) compared to their white counterparts. Among women who initiated breastfeeding, overweight/ obese white women of low SES had the highest rate of stopping within two months of giving birth (66.7 %). Conclusions Examination of SES and racial/ethnic differences within the context of prepregnancy weight revealed specific groups with low rates of breastfeeding initiation and duration. Interventions tailored for these at-risk groups are needed to increase the overall proportion of mothers and infants who benefit from the positive health outcomes associated with breastfeeding.