[nojito]

Because they use state level data first.

Methodology here.

https://data.cdc.gov/stories/s/Vaccine-Hesitancy-for-COVID-1...

[fallingfrog]

Ah ok. So we are looking at pretty large inaccuracies then. Typically you only want to draw in the county boundaries if you have reliable county level data. I’d call that a flaw.