Search or sort by any column to see a community's current coronavirus situation. NBC5 Investigates updates this chart every evening. The World Health Organization considers an overall positivity rate under 5% to be acceptable. The State of Illinois considers an overall positivity rate under 8% to be acceptable. Most organizations begin to have real concerns when a case positivity rate goes over 10%. "Case positivity" is the percentage of people who have coronavirus, out of all people tested. The state of Illinois relies on a slightly different rate -- the "positive test rate" -- which is the percentage of tests that are positive for coronavirus, out of all tests conducted. This counts repeated tests on the same people, and is nearly always lower than the "case positivity rate." The "7-Day Daily Case Average per 100K" is a computation of the average daily new case count, over the most recent 7 days, as a proportion of a town's population , divided by 100,000. Some states issue restrictions for travelers from areas when this figure is 10.0 or above. The City of Chicago has issued restrictions for travelers from states where this figure is 15.0 or above.