Take a look at the league table below. Arkansas leads the US at about 230 new cases per million per day – with the majority of all states well below 50 cases per million per day
According to the Mayo Clinic only 42% of adults in Arkansas (population 3m) have received at least one dose and 45% in Missouri (population 6.1m).
By contrast 16 states have over 60% of their populations covered by at least one dose. In this map from the Mayo Clinic – darker green means more coverage.
The worst states (in descending order) are:
A review of the age breakdown shows some of the disconnect
While 82% of people aged 65+ have received a vaccine in Arkansas – this still lags many of the states in the US. The population aged 18-64 is especially low at 46% (compare to California at 71%).