Yet 84% said they would back their state using public funds to provide free or discounted measles, mumps, and rubella vaccines, up from 81% in 2019.
The KFF poll, conducted earlier this month, also teases out impressions of Trump's health nominees and perceptions about the H5N1 threat.
The results call into question the common assumption that inflation-adjusted vaccine costs are constant over time, the authors say.
But the average number and duration of the episodes didn't differ significantly between the groups, and there were no serious adverse events.
The authors call for stronger vaccination systems, interventions, and catch-up campaigns in underserved populations.
Exemptions rose in 41 states, with 14 reporting that over 5% of kindergartners had an exemption from at least one vaccine.
California has reported 63 West Nile virus infections this year, including many in the Central Valley.
Vaccine effectiveness against rotavirus infection was highest in children younger than 3 years and declined with increasing age.
Clinicians should strongly recommend routine vaccinations for teens and verify that all—especially those in the Vaccines for Children program—are up to date, the authors say.
Among VFC-eligible children born during 2011 to 2020, coverage by age 24 months with one or more MMR dose and the combined seven-vaccine series was stable.
