The information comes from the Johns Hopkins Coronavirus Resource Center Johns Hopkins Coronavirus Resource Center

The number of cases in the previous two weeks is used to calculate if the rate is increasing or decreasing.

For example on the 6th February 2021 there had been a total of 1,144,281 cases in Illinois, on the 30th January there were 1,120,528 and on the 23rd there were 1,098,527 so on the 6th the number in last week was 23,763 and the number in the previous week was 22,001. The population of Illinois is 12,671,821 so the number of cases per 100,000 in the two weeks is 187 and 173 an increase of 8.1%.

If you hold your mouse over a cell the figures for the previous two weeks and the percentage increase is shown

Last updated on 20-Oct-2021 at 11:41:54

Key for the colours used
	Decrease by more than 50%
	Decrease by more than 25%
	Decrease by more than 10%
	Decrease by more than 5%
	Change by less than 5% or less than 20 cases
	Increase by more than 5%
	Increase by more than 10%
	Increase by more than 25%
	Increase by more than 50%
	Increase by more than 100%

Vertical lines indicate landmark dates

Horizontal lines indicate tier or alert level
NLD+		National Lockdown plus local travel restrictions
NLD		National Lockdown
SAH	4	Stay at Home
VH	3	Very High
H	2	High
M	1	Medium
LLD	1	Local Lockdown

Regions - check box to select only one
ENC	East North Central
ESC	East South Central
MATL	Mid-Atlantic
MOU	Mountain
MW	Midwest
NE	Northeast
NENG	New England
OTH	Other
PAC	Pacific
S	South
SATL	South Atlantic
W	West
WNC	West North Central
WSC	West South Central