COVID-19 Outcomes by Vaccination Status - Historical
data.cityofchicago.org | Last Updated 23 May 2024NOTE: This dataset has been retired and marked as historical-only. Weekly rates of COVID-19 cases, hospitalizations, and deaths among people living in Chicago by vaccination status and age. Rates for fully vaccinated and unvaccinated begin the week ending April 3, 2021 when COVID-19 vaccines became widely available in Chicago. Rates for boosted begin the week ending October 23, 2021 after booster shots were recommended by the Centers for Disease Control and Prevention (CDC) for adults 65+ years old and adults in certain populations and high risk occupational and institutional settings who received Pfizer or Moderna for their primary series or anyone who received the Johnson & Johnson vaccine. Chicago residency is based on home address, as reported in the Illinois Comprehensive Automated Immunization Registry Exchange (I-CARE) and Illinois National Electronic Disease Surveillance System (I-NEDSS). Outcomes: • Cases: People with a positive molecular (PCR) or antigen COVID-19 test result from an FDA-authorized COVID-19 test that was reported into I-NEDSS. A person can become re-infected with SARS-CoV-2 over time and so may be counted more than once in this dataset. Cases are counted by week the test specimen was collected. • Hospitalizations: COVID-19 cases who are hospitalized due to a documented COVID-19 related illness or who are admitted for any reason within 14 days of a positive SARS-CoV-2 test. Hospitalizations are counted by week of hospital admission. • Deaths: COVID-19 cases who died from COVID-19-related health complications as determined by vital records or a public health investigation. Deaths are counted by week of death. Vaccination status: • Fully vaccinated: Completion of primary series of a U.S. Food and Drug Administration (FDA)-authorized or approved COVID-19 vaccine at least 14 days prior to a positive test (with no other positive tests in the previous 45 days). • Boosted: Fully vaccinated with an additional or booster dose of any FDA-authorized or approved COVID-19 vaccine received at least 14 days prior to a positive test (with no other positive tests in the previous 45 days). • Unvaccinated: No evidence of having received a dose of an FDA-authorized or approved vaccine prior to a positive test. CLARIFYING NOTE: Those who started but did not complete all recommended doses of an FDA-authorized or approved vaccine prior to a positive test (i.e., partially vaccinated) are excluded from this dataset. Incidence rates for fully vaccinated but not boosted people (Vaccinated columns) are calculated as total fully vaccinated but not boosted with outcome divided by cumulative fully vaccinated but not boosted at the end of each week. Incidence rates for boosted (Boosted columns) are calculated as total boosted with outcome divided by cumulative boosted at the end of each week. Incidence rates for unvaccinated (Unvaccinated columns) are calculated as total unvaccinated with outcome divided by total population minus cumulative boosted, fully, and partially vaccinated at the end of each week. All rates are multiplied by 100,000. Incidence rate ratios (IRRs) are calculated by dividing the weekly incidence rates among unvaccinated people by those among fully vaccinated but not boosted and boosted people. Overall age-adjusted incidence rates and IRRs are standardized using the 2000 U.S. Census standard population. Population totals are from U.S. Census Bureau American Community Survey 1-year estimates for 2019. All data are provisional and subject to change. Information is updated as additional details are received and it is, in fact, very common for recent dates to be incomplete and to be updated as time goes on. This dataset reflects data known to CDPH at the time when the dataset is updated each week. Numbers in this dataset may differ from other public sources due to when data are reported and how City of Chicago boundaries are defined. For all datasets related to COVID-19, see https://data.cityofchicago.org/browse?limitTo=datasets&sortBy=alpha&tags=covid-19. Data Source: Illinois' National Electronic Disease Surveillance System (I-NEDSS), Illinois Comprehensive Automated Immunization Registry Exchange (I-CARE), U.S. Census Bureau American Community Survey
This dataset has the following 21 columns:
Column Name | API Column Name | Data Type | Description | Sample Values |
---|---|---|---|---|
Outcome | outcome | text | COVID-19 case, hospitalization, or death. | Cases Hospitalizations Deaths view top 100 |
Week End | week_end | calendar_date | The end date of the week (Sunday-Saturday) | 2021-04-03T00:00:00.000 2021-04-10T00:00:00.000 2021-04-17T00:00:00.000 2021-04-24T00:00:00.000 2021-05-01T00:00:00.000 view top 100 |
Age Group | age_group | text | The age group described, in years. Note the presence of an "All" value so care should be taken in summing values. | 0-4 12-17 18-29 30-49 50-64 view top 100 |
Unvaccinated Rate | unvaccinated_rate | number | Rate of the outcome per 100,000 unvaccinated Chicago residents in the age group | 0 2.5 1.2 4.1 0.5 view top 100 |
Vaccinated Rate | vaccinated_rate | number | Rate of the outcome per 100,000 fully vaccinated but not boosted Chicago residents in the age group | 0 1.2 0.3 0.5 0.4 view top 100 |
Boosted Rate | boosted_rate | number | Rate of the outcome per 100,000 fully vaccinated and boosted Chicago residents in the age group | 0 0.6 1.2 0.4 0.3 view top 100 |
Crude Vaccinated Ratio | crude_vaccinated_ratio | number | Crude incidence rate ratio (unvaccinated rate : vaccinated rate). | 0 1 2 5 7 view top 100 |
Crude Boosted Ratio | crude_boosted_ratio | number | Crude incidence rate ratio (unvaccinated rate : boosted rate). | 0 1 5 3 1.9523809524 view top 100 |
Age-Adjusted Unvaccinated Rate | age_adjusted_unvaccinated_rate | number | Age-adjusted rate of the outcome per 100,000 unvaccinated Chicago residents. Age-adjustment is only calculated for the “All” age group and is blank for all other groups. | 0 0.1367406006 0.1953699216 0.2418865696 0.1267351908 view top 100 |
Age-Adjusted Vaccinated Rate | age_adjusted_vaccinated_rate | number | Age-adjusted rate of the outcome per 100,000 fully vaccinated but not boosted Chicago residents. Age-adjustment is only calculated for the “All” age group and is blank for all other groups. | 0 0.2934920208 0.7069572968 0.1223103584 0.4158023792 view top 100 |
Age-Adjusted Boosted Rate | age_adjusted_boosted_rate | number | Age-adjusted rate of the outcome per 100,000 fully vaccinated and boosted Chicago residents. Age-adjustment is only calculated for the “All” age group and is blank for all other groups. | 0 0.0700378686 0.0558199776 0.1258578462 0.1400757372 view top 100 |
Age-Adjusted Vaccinated Ratio | age_adjusted_vaccinated_ratio | number | Age-adjusted incidence rate ratio (age-adjusted unvaccinated rate : age-adjusted vaccinated rate). Age-adjustment is only calculated for the “All” age group and is blank for all other groups. | 0 0.1934213017 0.1952636505 0.212240651 0.2159090909 view top 100 |
Age-Adjusted Boosted Ratio | age_adjusted_boosted_ratio | number | Age-adjusted incidence rate ratio (age-adjusted unvaccinated rate : age-adjusted boosted rate). Age-adjustment is only calculated for the “All” age group and is blank for all other groups. | 0 1.9523809524 0.5515341433 0.5630362904 0.6621451342 view top 100 |
Population Unvaccinated | population_unvaccinated | number | Total number of unvaccinated people in the age group. | 162642 210448 102168 86807 51071 view top 100 |
Population Vaccinated | population_vaccinated | number | Total number of fully vaccinated people in the age group. | 11383 11380 86577 278401 214134 view top 100 |
Population Boosted | population_boosted | number | Total number of boosted people in the age group. | 47130 47126 47117 47133 21266 view top 100 |
Outcome Unvaccinated | outcome_unvaccinated | number | Total number of unvaccinated people in the age group with the outcome. | 0 1 2 3 4 view top 100 |
Outcome Vaccinated | outcome_vaccinated | number | Total number of vaccinated people in the age group with the outcome. | 0 1 2 3 4 view top 100 |
Outcome Boosted | outcome_boosted | number | Total number of boosted people in the age group with the outcome. | 0 1 2 3 4 view top 100 |
Age Group Min | age_group_min | number | The low end of the age group. This column is used primarily to allow for easier sorting. The "All" age group is set to 999. | 0 5 12 18 30 view top 100 |
Age Group Max | age_group_max | number | TO BE HIDDEN: The high end of the age group. This column is used primarily to allow for easier sorting. The All age group is set to 999. The 80+ group is set to 200. | 4 11 17 29 49 view top 100 |