Effective interventions to improve uptake of vaccines among hesitant groups are urgently needed. Peer education is an effective intervention in modifying health behaviors in other conditions and may be effective in promoting vaccine confidence but has not been studied. To fill this knowledge gap, we will enroll approximately 152 parents of children age 0-18 months who are eligible for pneumococcal conjugate (PCV-13) vaccine and randomize them 1:1 to a peer-led vaccine education intervention or usual care.

Inclusion Criteria:

1. A parent of a child aged 0 to 18 months born at ≥35 weeks' gestation who is eligible for a dose of PCV-13. Eligibility by age defined as follows:

   1. Age 0-6 months: never received first dose or is >8 weeks from last dose (3 doses scheduled in this age group at 2, 4, and 6 months)
   2. Age 7-11 months: never received first dose or is > 8 weeks from last dose (2 doses scheduled in this age group if started at 7 months)
   3. 12-18 months: never received first dose, is >8 weeks from last dose (2 doses scheduled in this age group if started at 12 months) or is due for booster at 12-18 months having received primary series between age 2-11 months.

2. Self-identifies as Orthodox Jewish.

3. Is able to provide informed consent.

Exclusion Criteria:

1. Unable to communicate verbally in English or Yiddish
2. Unwilling or unable to utilize a Yiddish in-person or telephone interpreter
3. Has already participated in this study as an eligible adult or parent. A parent will only be able to participate in this study once (i.e. for only one child in the family that is eligible)
4. Has an appointment at clinic that day to specifically receive vaccines.

The de-identified participant data from the final research dataset used in the published manuscript will be shared upon reasonable request beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research provided the investigator who proposes to use the data executes a data use agreement with NYU Langone Health. Requests may be directed to: Ellie Carmody, MD, ellie.carmody@nyulangone.org.

Beginning 9 months and ending 36 months following article publication or as required by a condition of awards and agreements supporting the research.

The investigator who proposed to use the data will be granted access upon reasonable request. Requests should be directed to ellie.carmody@nyulangone.org. To gain access, data requestors will need to sign a data access agreement.