Illinois Covid Map and Case Count

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10,000 cases
March
April
May
June
July
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Sept.
Oct.
Nov.
Backlogged cases released
New cases
7-day average
Total reported On Nov. 29 14-day change
Cases 721,487 7,417 –25%
Deaths 12,895 43 +34%
Hospitalized 5,858 +17%

Day with data reporting anomaly.

Hospitalization data from the Covid Tracking Project; 14-day change trends use 7-day averages.

At least 43 new coronavirus deaths and 7,417 new cases were reported in Illinois on Nov. 29. Over the past week, there has been an average of 9,155 cases per day, a decrease of 25 percent from the average two weeks earlier.

Limited testing and uneven reporting may disrupt the counts in many locations this week. Some states and counties may show artificial spikes in their numbers when data reporting resumes after the holiday.

Average daily cases per 100,000 people in past week
Few or no cases
Share of population with a reported case
No cases reported
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Sources: State and local health agencies. Population and demographic data from Census Bureau.
About this data For total cases and deaths: The map shows the known locations of coronavirus cases by county. Circles are sized by the number of people there who have tested positive or have a probable case of the virus, which may differ from where they contracted the illness. For per capita: Parts of a county with a population density lower than 10 people per square mile are not shaded. For hot spots: The hot spots map shows the share of population with a new reported case over the last week. Parts of a county with a population density lower than 10 people per square mile are not shaded.

As of Monday morning, there have been at least 721,487 cases and 12,895 deaths in Illinois since the beginning of the pandemic, according to a New York Times database.

The table below was recently changed to show the average number of cases per day in the last seven days instead of the total number of cases over the last seven days.

Reported cases and deaths by county

This table is sorted by places with the most cases per 100,000 residents in the last seven days. Charts are colored to reveal when outbreaks emerged.

Total
cases
Per 100,000 Total
deaths
Per 100,000 Daily avg.
in last
7 days
Per 100,000 Daily avg.
in last
7 days
Per 100,000 Weekly cases per capita
Fewer More
Illinois 721,487 5,694 12,895 102 9,155 72.2 118.7 0.9
March 1
Nov. 29
Illinois heatmap
Fayette 1,709 8,010 31 145 42.6 199.5 0.4 2
Fayette heatmap
Lawrence 1,070 6,825 11 70 30.7 195.9 0.3 1.8
Lawrence heatmap
Stark 268 5,017 3 56 9.1 171.2
Stark heatmap
Effingham 2,770 8,145 21 62 48.1 141.6 0.6 1.7
Effingham heatmap
Clinton 3,308 8,807 61 162 52.1 138.8 0.7 1.9
Clinton heatmap
Lee 2,010 5,895 34 100 47.1 138.3 1.7 5
Lee heatmap
Massac 599 4,349 3 22 18.9 136.9 0.1 1
Massac heatmap
Wabash 570 4,948 8 69 15.7 136.4
Wabash heatmap
Hardin 155 4,057 1 26 5 130.9 0.1 3.7
Hardin heatmap
Logan 1,701 5,944 13 45 37 129.3 0.1 0.5
Logan heatmap
About this data Weekly cases per capita shows the share of population with a new reported case for each week. Weeks without a reported case are shaded gray. The daily average is calculated with cases and deaths that were reported in the last seven days.

The New York Times is engaged in a comprehensive effort to track details about every reported case in the United States, collecting information from federal, state and local officials around the clock. The numbers in this article are being updated several times a day based on the latest information our journalists are gathering from around the country.

The New York Times has found that official tallies in the United States and in more than a dozen other countries have undercounted deaths during the coronavirus outbreak because of limited testing availability.

Daily reported new cases

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10,000
15,000 cases
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April
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Nov.
Backlogged cases released
New cases
7-day average

Daily reported deaths

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50
100
150 deaths
March
April
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Sept.
Oct.
Nov.
Probable data released
New deaths
7-day average
These are days with a data reporting anomaly. Read more here. Note: The seven-day average is the average of a day and the previous six days of data.

Daily case and death reports show the severity of the pandemic over time. The picture can be put into further context by considering the number of tests performed and people hospitalized.

Daily reported specimens tested

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50,000
100,000 tests
March
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Oct.
Nov.
New tests
7-day average

Hospitalizations

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2,000
4,000
6,000
March
April
May
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July
Aug.
Sept.
Oct.
Nov.
Covid patients in hospitals each day
7-day average
These are days with a data reporting anomaly. Read more here. Source: Testing and hospitalization data from the Covid Tracking Project.
About this data Currently hospitalized is the number of patients with Covid-19 reported by the state to be in a hospital on that day. Dips and spikes could be due to inconsistent reporting by hospitals. Tests represent the number of individual P.C.R. viral test specimens reported tested that day.

If the previous level of testing was low, and hospitalizations are not increasing, a rise in daily cases could be explained as a result of increased testing. If daily tests have been increased and cases and hospitalizations have fallen or stayed low, that is a sign that the situation is improving or under control. Hospitalizations and deaths usually lag behind new cases, as it takes time for symptoms to develop and worsen.

Because the definitions used for testing and hospitalization data vary between states, it is not always possible to compare that data in one state to the figures reported in another.

We’re tracking restrictions in Illinois »

Since March, The Times has paid special attention to cases in nursing homes, food processing plants, correctional facilities and now at colleges and universities. Information on cases linked to these places comes from official releases by governments, companies and institutions directly. The Times is publishing lists of groupings of 50 or more cases related to a specific site, workplace, school or event.

Cases connected to Cases Location
+ Other 26,249 cases at 206 clusters
+ Colleges and universities 12,345 cases at 50 schools

About the data

In data for Illinois, the Times primarily relies on reports from the state, as well as health districts or county governments that often report ahead of the state. Illinois typically releases new data each day. Weekend counts may be lower because fewer sources report to the state. The state reports cases and deaths based on a person’s permanent or usual residence. The state also includes nonresidents diagnosed in the state, but the Times excludes this category since nonresidents are likely also counted in their home state.

The Times has identified the following reporting anomalies or methodology changes in the data:

June 8: Illinois began reporting probable cases and deaths.

Sept. 4: Illinois announced many backlogged cases from earlier in the week after resolving a data processing slowdown.

On Nov. 6, Illinois began reporting probable cases and deaths at the county level, resulting in one-day increases for many counties.

The tallies on this page include cases and deaths that have been identified by public health officials as probable coronavirus patients. The Illinois Department of Health releases new data for probable cases once a week, which can cause a single-day spike in the number of reported cases.

Confirmed cases and deaths, which are widely considered to be an undercount of the true toll, are counts of individuals whose coronavirus infections were confirmed by a molecular laboratory test. Probable cases and deaths count individuals who meet criteria for other types of testing, symptoms and exposure, as developed by national and local governments.

Governments often revise data or report a single-day large increase in cases or deaths from unspecified days without historical revisions, which can cause an irregular pattern in the daily reported figures. The Times is excluding these anomalies from seven-day averages when possible.

Read more about the methodology and download county-level data for coronavirus cases in the United States from The New York Times on GitHub.