I wonder what the United States would be categorized under their system? We tend to get average case daily new case rates lately well north of 200,000 people in a nation with 330 million people. 200,000 daily new cases/330 million population = 1 case in 1,650 people per day in the U.S. And that's using a case rate way under what's been reported a number of recent days.
But you said when > 500 cases per 100,000 residents are registered in the past 28 days.
So, it becomes 28 cases in 1,650 people per 28 days in the U.S. Now to convert to per 100,000 population.
28 cases/1,650 population = x cases/100,000 population.
x = 28x100,000/1,650 = 1,697 (rounded up).
So, if I did the math (which is not my strong point!) correctly, then the U.S. is Level 4, with a very high level of COVID-19 risk.
Should we flee?
^^ THIS!
Miami would be a Level 5 COVID hurricane.
Take a deep breath and look at the big picture.