National trends in patterns of under-vaccination in early childhood: National Immunization Survey-Child, United States, 2011-2021.

ABSTRACT:

Background

The study's objective was to examine national trends in patterns of under-vaccination in the United States.

Research design and methods

The National Immunization Survey-Child (NIS-Child) is an annual cross-sectional survey that collects provider-verified vaccination records from a large national probability sample of children. Records from the 2011-2021 NIS-Child were used to assess receipt of the combined 7-vaccine series by age 24 months. Based on prior work, patterns indicative of hesitancy included zero vaccines, not starting ≥1 series, and consistent vaccine-limiting. Patterns indicative of practical issues included starting all series but missing doses. Up-to-date (UTD) was defined as receiving all doses in the combined 7-vaccine series.

Results

The s

SUBMITTER: Daley MF 

PROVIDER: S-EPMC11414198 | biostudies-literature | 2024 Jan-Dec

REPOSITORIES: biostudies-literature