Sliding vaccination rates
Kindergartner vaccination rates in these neighboring counties, already below the 95% threshold for herd immunity, plummeted further in the past decade.
This line chart compares kindergarten MMR vaccination rates for Mohave County, Arizona and Washington County, Utah, from 2014 to 2024. Both trend downward: Washington falls from nearly 94% to 79%; Mohave from 91.5% to 78.4%.
