Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

2016-17 Influenza Season Vaccination Coverage Estimates for Local Areas and Territories

Back to 2016-17 Season main page

Influenza vaccination coverage for children 6 months through 17 years and adults 18 years and older is available from NIS-Flu and BRFSS for selected local areas and territories. Additional information on methods is available at Surveillance of Influenza Vaccination Coverage — United States, 2007–08 Through 2011–12 Influenza Seasons.

View in Excel [83 KB]

IL-City of Chicago

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Illinois-City of Chicago†, National Immunization Survey-Flu (NIS-Flu) and Behavioral Risk Factor Surveillance System (BRFSS), 2016-17 influenza season
July August September October November December January February March April May
Selected Groups Sample Size %‡ 95% CI %‡ 95% CI %‡ 95% CI %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI		 %‡ 95%
CI
Children
6 mos-17 yrs 1,337 3.4 (±1.6) 9.8 (±2.3) 23.0 (±3.3) 42.5 (±3.9) 52.4 (±4.0) 56.6 (±4.0) 61.1 (±4.1) 63.6 (±4.2) 65.6 (±4.3) 66.2 (±4.3) 67.7 (±4.4)
6 mos-4 yrs 391 —§ — 10.1 (±5.0) 27.8 (±7.4) 46.6 (±7.6) 60.4 (±7.7) 66.6 (±7.5) 70.7 (±7.4) 74.1 (±7.6) 75.0 (±7.6) 76.3 (±7.7) 79.3 (±7.9)
5-12 yrs 566 —§ — 11.0 (±3.5) 24.1 (±4.7) 44.2 (±5.6) 53.4 (±5.7) 55.6 (±5.7) 58.4 (±5.7) 60.8 (±5.8) 64.1 (±6.2) 64.1 (±6.2) 65.7 (±6.3)
13-17 yrs 380 —§ — 7.6 (±3.3) 15.9 (±4.5) 35.2 (±6.6) 42.5 (±7.0) 48.2 (±7.4) 56.4 (±7.9) 58.0 (±7.9) 58.8 (±7.9) 59.9 (±8.0) 59.9 (±8.0)
Adults
18+ yrs 800 —§ — —§ — 7.6 (±2.5) 22.9 (±4.3) 29.9 (±4.9) 32.8 (±5.3) 35.0 (±5.7) 35.0 (±5.7) 36.2 (±5.9) 36.2 (±5.9) 36.2 (±5.9)
18-64 yrs 541 —§ — —§ — 5.5 (±2.7) 18.0 (±4.7) 24.3 (±5.5) 26.1 (±5.9) 28.9 (±6.3) 28.9 (±6.3) 28.9 (±6.3) 28.9 (±6.3) 28.9 (±6.3)
18-64 yrs
at high risk 		111 0.0 (±0.0) 0.0 (±0.0) —§ — 21.3 (±11.8)|| 31.4 (±13.9)|| 31.4 (±13.9)|| 35.1 (±15.5)|| 35.1 (±15.5)|| 35.1 (±15.5)|| 35.1 (±15.5)|| 35.1 (±15.5)||
18-64 yrs
not at high
risk 		426 —§ — —§ — 5.9 (±3.3) 16.8 (±5.1) 22.4 (±6.1) 24.6 (±6.5) 27.3 (±7.1) 27.3 (±7.1) 27.3 (±7.1) 27.3 (±7.1) 27.3 (±7.1)
18-49 yrs 344 0.0 (±0.0) —§ — 4.8 (±2.7) 16.7 (±5.3) 22.4 (±6.7) 24.0 (±6.9) 27.3 (±7.4) 27.3 (±7.4) 27.3 (±7.4) 27.3 (±7.4) 27.3 (±7.4)
18-49 yrs
at high risk 		44 0.0 (±0.0) 0.0 (±0.0) —§ — —§ — —§ — —§ — —§ — —§ — —§ — —§ — —§ —
18-49 yrs
not at high
risk 		297 0.0 (±0.0) —§ — —§ — 16.3 (±5.7) 21.0 (±7.1) 22.9 (±7.4) 25.8 (±8.0) 25.8 (±8.0) 25.8 (±8.0) 25.8 (±8.0) 25.8 (±8.0)
50-64 yrs 197 —§ — —§ — —§ — 21.7 (±10.0) 29.5 (±11.2)|| 32.0 (±11.8)|| 33.5 (±12.2)|| 33.5 (±12.2)|| 33.5 (±12.2)|| 33.5 (±12.2)|| 33.5 (±12.2)||
65+ yrs 259 0.0 (±0.0) —§ — 15.3 (±5.9) 41.2 (±9.4) 51.2 (±9.6) 57.6 (±10.0) 57.6 (±10.0) 57.6 (±10.0) 66.4 (±13.5)|| 66.4 (±13.5)|| 66.4 (±13.5)||

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for persons who reported being vaccinated July 2016 through May 2017. Coverage estimates for children living in Guam include persons interviewed April through June 2017, and estimates for adults living in the U.S. Virgin Islands include persons interviewed February through June 2017. All other estimates are for persons interviewed September (BRFSS) or October (NIS-Flu) 2016 through June 2017.

† The definitions for the City of Chicago and the City of Houston differ for children (NIS-Flu) and adults (BRFSS). The City of Chicago estimates for children include only those residing in the city limits of Chicago while the estimates for adults include those residing in Cook County which includes the city of Chicago and other municipalities. The City of Houston estimates for children include only those residing in the city limits of Houston while the estimates for adults include those residing in any of the following Texas counties: Brazoria, Chambers, Fort Bend, Galveston, Harris, Liberty, Montgomery, and Waller. The definition of City of New York is based upon county of residence and is the same for both surveys.

‡ Month of vaccination was imputed for respondents with missing month of vaccination data. Percentages are weighted to the U.S. population. For more information on imputation and statistical methods see http://www.cdc.gov/flu/fluvaxview/coverage-1617estimates.htm#data.

§ Estimates not reliable because relative standard error is >0.3. || Estimates might not be reliable because confidence interval half-width is >10.

Selected high-risk conditions includes people with asthma, diabetes, heart disease, chronic obstructive pulmonary disease, or cancers other than skin cancer.

** “Rest of State” refers to the population of a state that does not reside in an area in which an influenza vaccination coverage estimate was calculated. For example, Illinois-Rest of State refers to the population of Illinois excluding the City of Chicago. Rest of State estimates are available for children (NIS-Flu) but not adults (BRFSS).

†† Estimates not reliable because sample size is <30.

Language:
Format:
TOP