They seem to be using county-specific numbers here, and are just referring to Alachua county cases and testing... unless I'm confused. I'm trying to follow their math. Both positivity and community spread have been significantly lower in Alachua compared to the state overall and to the hotspots.
Personally I take any and all of the Florida numbers with a healthy dose of skepticism. I think they are all bunk, in some fashion, due to county by county issues in reporting like this one appears to be. However, I don't think the trends they represent are bunk. I tend to believe the errors are relatively consistent, at least, so when the graph goes north on a number and the slope of the line is alarming... that's something to express concern about. By any measure, positivity continues to be at a significantly higher rate than it was a month ago.