cityofchicago/covid19-outcomes-by-vaccination-status-6irb-gasv
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Updated 5 days ago
Indexed 5 hours ago

COVID-19 Outcomes by Vaccination Status

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

Columns

NameSocrata field nameColumn name in sgr mountData typeDescription
Crude Boosted Ratiocrude_boosted_ratiocrude_boosted_ratioNumberCrude incidence rate ratio (unvaccinated rate : boosted rate).
Age-Adjusted Unvaccinated Rateage_adjusted_unvaccinated_rateage_adjusted_unvaccinated_rateNumberAge-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.
Age-Adjusted Vaccinated Rateage_adjusted_vaccinated_rateage_adjusted_vaccinated_rateNumberAge-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.
Age-Adjusted Boosted Rateage_adjusted_boosted_rateage_adjusted_boosted_rateNumberAge-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.
Age Group Maxage_group_maxage_group_maxNumberTO 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.
Outcome Unvaccinatedoutcome_unvaccinatedoutcome_unvaccinatedNumberTotal number of unvaccinated people in the age group with the outcome.
Outcome Vaccinatedoutcome_vaccinatedoutcome_vaccinatedNumberTotal number of vaccinated people in the age group with the outcome.
Age Groupage_groupage_groupTextThe age group described, in years. Note the presence of an "All" value so care should be taken in summing values.
Outcome Boostedoutcome_boostedoutcome_boostedNumberTotal number of boosted people in the age group with the outcome.
Population Vaccinatedpopulation_vaccinatedpopulation_vaccinatedNumberTotal number of fully vaccinated people in the age group.
Population Boostedpopulation_boostedpopulation_boostedNumberTotal number of boosted people in the age group.
Age Group Minage_group_minage_group_minNumberThe low end of the age group. This column is used primarily to allow for easier sorting. The "All" age group is set to 999.
OutcomeoutcomeoutcomeTextCOVID-19 case, hospitalization, or death.
Week Endweek_endweek_endCalendar dateThe end date of the week (Sunday-Saturday)
Crude Vaccinated Ratiocrude_vaccinated_ratiocrude_vaccinated_ratioNumberCrude incidence rate ratio (unvaccinated rate : vaccinated rate).
Unvaccinated Rateunvaccinated_rateunvaccinated_rateNumberRate of the outcome per 100,000 unvaccinated Chicago residents in the age group
Age-Adjusted Boosted Ratioage_adjusted_boosted_ratioage_adjusted_boosted_ratioNumberAge-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.
Age-Adjusted Vaccinated Ratioage_adjusted_vaccinated_ratioage_adjusted_vaccinated_ratioNumberAge-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.
Population Unvaccinatedpopulation_unvaccinatedpopulation_unvaccinatedNumberTotal number of unvaccinated people in the age group.
Vaccinated Ratevaccinated_ratevaccinated_rateNumberRate of the outcome per 100,000 fully vaccinated but not boosted Chicago residents in the age group
Boosted Rateboosted_rateboosted_rateNumberRate of the outcome per 100,000 fully vaccinated and boosted Chicago residents in the age group
 
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