(ABC News) – Most counties in the United States have seen a decline in childhood measles, mumps and rubella vaccination rates over the last five years, according to a new report published Monday.

Researchers from Johns Hopkins University looked at data from 2,066 counties across 33 states between 2019 and 2024. They found that 78% of the counties, or 1,614, reported a decrease in vaccination rates over that period.

What’s more, the average vaccination rate fell from 93.92% pre-pandemic to 91.26% post-pandemic, according to the report. This represents a decline of about 3%. (Read More)