others not so much. I believe it comes down to having the testing kits. The mayor of Tucson, AZ talked about that recently on the Rachel Maddow show.

It's also a problem country by country. Some are testing a lot, others, like India, not so much. https://www.worldometers.info/coronavirus/#countries

Using my state as the example, 6% of the tests, 4% of the population.
I wonder though, how hard some states are trying to get supplies.

has begged the President or perhaps those around him to send testing kits, but she's been ignored, apparently.

I also understand that the places making the kits are having a hard time getting the supplies needed to make them. Or run the tests themselves.

Our local paper has a story headline of "Indiana's positive rate soars to 5.9%".

Saw it on CNN a couple hours ago.
Check out the graph for the 7 day rolling average on the chart in the link!

https://coronavirus.jhu.edu/testing/individual-states/florida