08 Mat Peds Peacock 508

CDC ACIP — Vaccine Advisory Committee

Acip

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Centers for Disease Control and Prevention
National Center for Immunization and Respiratory Diseases
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Maternal RSV Vaccine Implementation 
Considerations
Georgina Peacock, MD, MPH
Immunization Services Division
Centers for Disease Control and Prevention
▪Vaccine storage, handling, and administration
▪Cost of vaccine
▪Insurance coverage
▪Supply and availability
▪Complexity of immunization schedule
▪Vaccine demand and coverage in pregnant people
▪Obstetric and pediatric provider roles in vaccination decisions
▪Immunization information systems
▪Communication challengesMaternal RSV Implementation Considerations

▪Overall clinical implementation similar to other vaccines
–Stored at 2 ◦to 8◦C
–Administered as a single dose through intramuscular route
▪Additional steps required for dilution, 
including reconstitution of the lyophilized antigen 
component with the sterile water diluent componentPfizer RSV Vaccine Storage, Handling, and Administration
Package Insert -ABRYSVO (STN 125769/26) | FDA
▪Proposed recommendations to ACIP allow for simultaneous administration 
with other recommended vaccines
▪Increasing number of vaccines could lead to concerns for limited storage spaceSupplied as a kit with the following components:
▪Cost of the Pfizer RSV vaccine is $295/dose, compared to ~$46 -52 for Tdap1
–Cost is lower than infant nirsevimab ($495 private sector cost)
▪Reimbursement and cost recovery challenges already identified by providers and 
practices as an implementation barrier for maternal immunization2Cost of Maternal RSV Vaccine
1. Current CDC Vaccine Price List | CDC
2.Immunization Practices of U.S. Obstetrician/Gynecologists for Pregnant Patients | ScienceDirect
Provider Financial Concerns 
are a Leading Barrier to 
Maternal Immunization
Immunization Practices of U.S. Obstetrician/Gynecologists for Pregnant Patients | 
ScienceDirect

▪Private insurance: 52% of pregnant people1
–The Affordable Care Act (ACA) requires insurers to cover all ACIP -routinely recommended 
immunizations for plan years that begin on or after the date that is one year after the date of the 
recommendation2
▪Medicaid: 41% of pregnant people1
–After 10/1/23, when the Inflation Reduction Act provisions become effective, state Medicaid agencies 
will be required to cover vaccines and their administration without cost -sharing for nearly all full -
benefit adult beneficiaries covered under traditional Medicaid, if the CDC/ACIP recommendations 
apply3
▪No insurance: 4% of pregnant people “self -pay” (likely uninsured)1
–If recommended, ACIP will vote on a Vaccines for Children resolution for maternal RSV vaccine in 
people aged <19 years
–For people age 19+ years, limited availability (e.g., through 317 program)Insurance Coverage of Maternal RSV Vaccine
1.Products -Data Briefs -Number 468 -May 2023 (cdc.gov) ; insurance status refers to source of payment for delivery. Another ~3% used other types of coverage
2.42 U.S. Code §300gg –13 -Coverage of preventive health services | Cornell Law School
3.Anniversary of the Inflation Reduction Act: Update on CMS Implementation | CMS
▪ACIP has recommended nirsevimab as a routine immunization. Therefore, it will be 
covered under the ACA without cost sharing by the patient starting in the effective 
plan year1
▪Nirsevimab is included in the Vaccines for Children Program2
–Eligible children (~50% of U.S. children) will be able to access nirsevimab at no costInsurance Coverage for Infant Nirsevimab
1.42 U.S. Code §300gg –13 -Coverage of preventive health services | Cornell Law School
2.Advisory Committee on Immunization Practices, Vaccines for Children Program | CDC
▪No anticipated supply/demand mismatch
▪Because the Pfizer maternal RSV vaccine is the same product in use for adults aged 
≥60 years, availability is expected shortly after ACIP recommendations
▪Nirsevimab will likely be available late September/early October, but may not be 
available in all pediatric settings this season
–Efforts underway to increase number of birthing hospitals who will administer nirsevimabSupply and Availability of Maternal RSV Vaccine and 
Nirsevimab During 2023 –2024 RSV Season
Increasing Complexity of Maternal Immunization Schedule
▪Increasingly complex maternal immunization schedule, with different timing of 
vaccines based on season and/or gestational age (with seasonal timing varying in 
some locations)
▪Limited window for RSV vaccine administration
▪Unclear willingness of pregnant people to accept multiple vaccines in pregnancy

In a survey of pregnant people, 12% said they would accept 
no vaccines, and 49% said they would accept 1 -2 vaccines
CDC and University of Iowa/RAND survey, unpublished

Uptake of Vaccines among Pregnant People Has Declined 
and Disparities Persist
Flu, Tdap, and COVID -19 Vaccination Coverage Among Pregnant Women –United States, April 2022 | CDC

▪Decisions for whether to administer maternal RSV vaccine or infant nirsevimab will 
need to be made during pregnancy
▪Studies continue to demonstrate healthcare providers as pregnant people’s most 
trusted source of information on vaccines, and provider recommendation is a strong 
predictor of vaccination1
▪However, one survey showed that 2/3 of obstetricians did not feel providing 
information about routine childhood immunizations was part of their role2Obstetric Provider Role in Immunization Decisions
1.Lutz C, et al. Understanding barriers and predictors of maternal immunization: Identifying gaps through an exploratory litera ture review. Vaccine 36 (2018): 7445 -7455
2.Missed Opportunities: A National Survey of Obstetricians About Attitudes on Maternal and Infant Immunization | SpringerLink
▪Recommendations for nirsevimab that are contingent upon knowledge of maternal 
vaccination status could be challenging if the pediatric provider does not receive the 
maternal record
▪Verbal report of vaccines received during pregnancy may not be reliable1
▪Pediatric providers may need to make decisions on nirsevimab administration with 
incomplete information on maternal vaccination statusPediatric Provider Role in Immunization Decisions
1.Tdap Vaccination Coverage During Pregnancy —Selected Sites, United States, 2006 –2015 | CDC
▪State IIS vary in adult immunization capture
▪Pregnancy status not identified in IIS, though could potentially consider RSV vaccine 
administrations in adult women (<age 60 years) as a proxy
▪Unable to link maternal and infant immunization records in the IIS
–Clinical Decision Support for immunization unable to take into account maternal 
vaccination history for forecasting for infant nirsevimab immunization
–Some state IIS policies limit ability of pediatric providers to review adult records, or 
records for individuals who are not their patientsImmunization Information Systems (IIS)
▪Terminology: Vaccine (maternal product) vs. 
Immunization (infant product)
▪Conveying potential risks and benefits of each 
approach, and helping the pregnant person make an 
informed decision
–Including potential but undetermined risk of preterm birth with 
maternal immunization
▪Discussing financial implications to patient in setting of 
uncertainties about coverage during the first year of 
implementationCommunications Challenges

▪Formative Research and Message Testing:
–Focus groups and in -depth interviews with pregnant people and prenatal health 
providers (in progress)
–Surveys with parents of young children and pregnant and recently pregnant people
▪Patient and provider education materials
▪Digital partnerships with healthcare provider organizations
▪Partnerships with organizations that serve pregnant people
▪Social media across CDC’s platformsCommunications Activities

Thank You