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

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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.

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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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Illinois-Rest of State**, 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 3,264 1.3 (±0.5) 5.3 (±1.0) 13.8 (±1.6) 32.4 (±2.3) 42.1 (±2.6) 46.6 (±2.9) 49.3 (±2.9) 50.4 (±3.0) 51.1 (±3.0) 51.7 (±3.1) 51.8 (±3.1)
6 mos-4 yrs 970 1.8 (±0.9) 5.1 (±1.5) 15.7 (±2.8) 36.4 (±4.3) 49.9 (±4.7) 55.1 (±4.8) 58.2 (±4.9) 61.2 (±5.1) 62.2 (±5.1) 64.5 (±5.9) 64.9 (±6.0)
5-12 yrs 1,503 § 6.3 (±1.7) 14.7 (±2.4) 34.5 (±3.3) 43.5 (±3.5) 47.6 (±3.7) 50.8 (±3.8) 51.4 (±3.9) 51.6 (±3.9) 51.6 (±3.9) 51.6 (±3.9)
13-17 yrs 791 § 3.8 (±1.6) 11.2 (±2.7) 26.5 (±4.5) 34.6 (±5.2) 39.2 (±5.7) 40.9 (±5.8) 41.4 (±5.8) 42.5 (±5.9) 42.5 (±5.9) 42.5 (±5.9)
Adults
18+ yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs at high risk —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs not at high

risk

—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs —** —** —** —** —** —** —** —** —** —** —**
18-49 yrs at high risk —** —** —** —** —** —** —** —** —** —** —**
18-49 yrs not at high

risk

—** —** —** —** —** —** —** —** —** —** —**
50-64 yrs —** —** —** —** —** —** —** —** —** —** —**
65+ yrs —** —** —** —** —** —** —** —** —** —** —**

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 Flu Vaccination Coverage, United States, 2015-16 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, New York-City of New York, 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 2,554 3.8 (±2.2) 8.9 (±2.3) 23.1 (±2.6) 42.5 (±2.9) 54.0 (±2.9) 58.5 (±3.0) 63.1 (±3.0) 65.6 (±3.0) 66.2 (±3.1) 67.2 (±3.1) 68.1 (±3.2)
6 mos-4 yrs 906 2.9 (±1.6) 8.5 (±2.4) 26.4 (±4.0) 45.4 (±4.5) 58.7 (±4.5) 64.1 (±4.6) 68.7 (±4.7) 74.3 (±4.9) 75.1 (±5.0) 75.4 (±5.0) 76.3 (±5.1)
5-12 yrs 1,036 § 10.8 (±4.8) 24.6 (±4.8) 43.6 (±4.8) 54.3 (±4.7) 57.7 (±4.6) 63.1 (±4.6) 64.4 (±4.6) 64.8 (±4.7) 66.2 (±4.7) 67.2 (±4.9)
13-17 yrs 612 § 6.3 (±2.3) 17.5 (±3.7) 38.0 (±5.1) 49.0 (±5.5) 54.3 (±5.5) 57.5 (±5.6) 59.7 (±5.7) 60.6 (±5.7) 61.0 (±5.8) 61.7 (±5.9)
Adults
18+ yrs 2,848 § 1.7 (±0.8) 7.9 (±1.6) 23.0 (±2.4) 31.7 (±2.5) 35.3 (±2.7) 39.2 (±2.7) 41.3 (±2.9) 42.3 (±2.9) 42.8 (±2.9) 43.1 (±2.9)
18-64 yrs 2,152 § § 7.6 (±2.0) 20.8 (±2.5) 28.9 (±2.9) 32.1 (±3.1) 35.8 (±3.1) 38.1 (±3.3) 38.6 (±3.3) 39.0 (±3.3) 39.4 (±3.3)
18-64 yrs
at high risk
462 § § 7.2 (±2.9) 24.4 (±5.7) 38.7 (±6.7) 42.3 (±6.9) 46.7 (±7.1) 49.2 (±7.3) 50.0 (±7.3) 51.5 (±7.4) 51.5 (±7.4)
18-64 yrs
not at high
risk
1,658 § § 7.6 (±2.4) 19.9 (±2.9) 26.6 (±3.3) 29.8 (±3.3) 33.4 (±3.5) 35.6 (±3.7) 36.1 (±3.7) 36.1 (±3.7) 36.6 (±3.9)
18-49 yrs 1,425 § § 7.8 (±2.5) 19.5 (±3.3) 26.6 (±3.5) 29.8 (±3.7) 33.1 (±3.9) 35.1 (±3.9) 35.9 (±3.9) 35.9 (±3.9) 35.9 (±3.9)
18-49 yrs
at high risk
212 § § § 19.0 (±7.3) 32.6 (±9.2) 36.2 (±9.6) 40.4 (±10.2)|| 42.4 (±10.4)|| 44.0 (±10.6)|| 44.0 (±10.6)|| 44.0 (±10.6)||
18-49 yrs
not at high
risk
1,192 § § 7.7 (±2.9) 19.2 (±3.5) 25.4 (±3.9) 28.6 (±3.9) 31.7 (±4.1) 33.8 (±4.3) 34.5 (±4.3) 34.5 (±4.3) 34.5 (±4.3)
50-64 yrs 727 § § 7.1 (±2.4) 23.8 (±4.3) 34.3 (±5.1) 37.5 (±5.3) 42.3 (±5.7) 45.2 (±5.9) 45.2 (±5.9) 46.4 (±5.9) 47.9 (±6.5)
65+ yrs 696 § § 9.4 (±2.9) 32.6 (±4.9) 43.8 (±5.3) 49.3 (±5.5) 54.2 (±5.7) 55.7 (±5.7) 58.0 (±6.1) 59.1 (±6.1) 59.1 (±6.1)

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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, New York-Rest of State**, 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 3,057 1.7 (±0.8) 5.0 (±1.3) 17.9 (±2.1) 39.9 (±2.7) 52.0 (±2.8) 56.4 (±2.8) 59.1 (±2.9) 61.1 (±2.9) 62.1 (±3.0) 63.1 (±3.1) 64.3 (±3.3)
6 mos-4 yrs 935 § 8.3 (±3.4) 26.0 (±5.1) 46.3 (±5.2) 57.6 (±5.1) 64.9 (±5.1) 67.9 (±5.2) 70.6 (±5.3) 73.1 (±5.6) 73.6 (±5.6) 74.6 (±5.7)
5-12 yrs 1,418 § 4.7 (±1.8) 16.5 (±2.7) 39.9 (±3.6) 53.2 (±3.8) 57.2 (±3.8) 59.0 (±3.9) 60.5 (±3.9) 61.6 (±4.1) 63.3 (±4.4) 65.8 (±4.9)
13-17 yrs 704 § 3.1 (±1.5) 14.0 (±3.2) 35.2 (±5.4) 46.4 (±5.6) 49.2 (±5.6) 53.1 (±5.9) 55.3 (±5.9) 55.3 (±5.9) 55.8 (±6.0) 55.8 (±6.0)
Adults
18+ yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs —** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
50-64 yrs —** —** —** —** —** —** —** —** —** —** —**
65+ yrs —** —** —** —** —** —** —** —** —** —** —**

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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Pennsylvania-Philadelphia County, 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 2,265 3.2 (±1.1) 9.7 (±2.1) 24.3 (±2.6) 43.6 (±3.0) 54.5 (±3.1) 61.8 (±3.3) 66.4 (±3.4) 69.1 (±3.5) 71.1 (±3.6) 73.0 (±3.8) 73.0 (±3.8)
6 mos-4 yrs 706 3.7 (±1.9) 12.8 (±5.4) 26.2 (±5.7) 47.2 (±5.8) 61.9 (±5.7) 73.1 (±5.6) 79.5 (±5.5) 81.5 (±5.5) 82.2 (±5.5) 82.2 (±5.5) 82.2 (±5.5)
5-12 yrs 916 3.8 (±2.0) 10.4 (±3.1) 24.3 (±3.9) 43.0 (±4.6) 52.4 (±4.7) 59.7 (±4.9) 64.1 (±5.1) 65.9 (±5.1) 68.7 (±5.4) 72.8 (±6.2) 72.8 (±6.2)
13-17 yrs 643 § 6.1 (±2.4) 22.6 (±4.1) 41.4 (±5.2) 50.6 (±5.6) 54.3 (±5.7) 57.7 (±6.0) 62.3 (±6.8) 64.6 (±6.9) 65.1 (±7.0) 65.1 (±7.0)
Adults
18+ yrs 442 § § 12.1 (±4.3) 27.9 (±5.5) 38.9 (±6.1) 44.3 (±6.3) 47.6 (±6.3) 49.4 (±6.5) 50.2 (±6.5) 51.4 (±6.5) 53.6 (±7.1)
18-64 yrs 350 § § 13.4 (±4.9) 28.2 (±6.1) 38.3 (±6.9) 43.5 (±7.1) 46.5 (±7.1) 48.1 (±7.1) 48.9 (±7.1) 50.3 (±7.3) 52.8 (±7.8)
18-64 yrs

at high risk

96 0.0 (±0.0) § 19.4 (±11.2)|| 41.0 (±13.3)|| 55.8 (±12.5)|| 60.2 (±12.2)|| 62.2 (±12.0)|| 62.2 (±12.0)|| 62.2 (±12.0)|| 64.4 (±12.0)|| 69.5 (±13.3)||
18-64 yrs

not at high

risk

249 § § 11.8 (±5.7) 24.9 (±7.1) 33.6 (±8.0) 38.2 (±8.2) 41.4 (±8.4) 43.8 (±8.6) 45.1 (±8.8) 45.8 (±8.8) 46.7 (±9.0)
18-49 yrs 245 § § 11.6 (±5.3) 24.9 (±6.9) 35.4 (±8.2) 41.1 (±8.4) 44.6 (±8.6) 45.3 (±8.6) 46.6 (±8.8) 47.2 (±8.8) 48.2 (±9.0)
18-49 yrs

at high risk

51 0.0 (±0.0) § § § 41.6 (±18.0)|| 50.5 (±17.8)|| 52.2 (±17.6)|| 52.2 (±17.6)|| 52.2 (±17.6)|| 52.2 (±17.6)|| 52.2 (±17.6)||
18-49 yrs

not at high

risk

189 § § 11.7 (±5.9) 24.3 (±7.6) 35.1 (±9.2) 38.7 (±9.4) 42.8 (±9.8) 43.8 (±9.8) 45.5 (±10.2)|| 46.4 (±10.2)|| 47.6 (±10.4)||
50-64 yrs 105 0.0 (±0.0) § § 37.0 (±12.9)|| 46.0 (±12.7)|| 50.1 (±12.5)|| 51.8 (±12.5)|| 55.0 (±12.0)|| 55.0 (±12.0)|| 57.6 (±12.3)|| 62.3 (±13.7)||
65+ yrs 92 0.0 (±0.0) 0.0 (±0.0) § 26.1 (±11.0)|| 42.4 (±12.3)|| 48.3 (±12.5)|| 53.5 (±13.9)|| 56.8 (±13.9)|| 56.8 (±13.9)|| 56.8 (±13.9)|| 56.8 (±13.9)||

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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Pennsylvania-Rest of State**, 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 3,204 0.6 (±0.3) 4.3 (±1.2) 17.0 (±2.5) 40.4 (±3.5) 51.7 (±3.6) 55.2 (±3.6) 57.8 (±3.6) 59.1 (±3.7) 59.8 (±3.7) 61.9 (±3.9) 62.0 (±3.9)
6 mos-4 yrs 948 § 5.0 (±2.5) 23.6 (±6.0) 45.4 (±6.2) 62.3 (±5.9) 67.1 (±5.9) 69.5 (±5.9) 70.4 (±5.9) 72.0 (±6.0) 73.0 (±6.1) 73.0 (±6.1)
5-12 yrs 1,418 § 4.4 (±1.7) 15.4 (±3.0) 39.9 (±4.5) 50.8 (±4.7) 54.5 (±4.7) 57.8 (±4.7) 59.6 (±4.8) 60.0 (±4.9) 62.4 (±5.3) 62.7 (±5.3)
13-17 yrs 838 § 3.7 (±2.1) 14.2 (±4.5) 37.2 (±7.3) 44.6 (±7.5) 46.6 (±7.6) 48.4 (±7.6) 49.3 (±7.7) 49.5 (±7.6) 51.8 (±8.0) 51.8 (±8.0)
Adults
18+ yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs —** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
50-64 yrs —** —** —** —** —** —** —** —** —** —** —**
65+ yrs —** —** —** —** —** —** —** —** —** —** —**

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 2016. 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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Texas-Bexar County, 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 2,186 2.5 (±0.8) 8.1 (±1.5) 19.0 (±3.4) 37.8 (±3.7) 51.8 (±3.9) 58.1 (±4.0) 61.6 (±4.0) 63.0 (±4.0) 63.4 (±4.0) 63.8 (±4.0) 64.4 (±4.1)
6 mos-4 yrs 664 3.2 (±1.7) 7.2 (±2.4) 18.1 (±3.9) 36.7 (±6.2) 53.3 (±7.9) 61.8 (±8.3) 65.8 (±8.6) 68.0 (±8.8) 68.9 (±8.9) 69.7 (±9.2) 70.3 (±9.4)
5-12 yrs 879 3.0 (±1.4) 8.4 (±2.4) 22.5 (±6.9) 41.5 (±6.4) 55.8 (±6.0) 61.9 (±5.7) 65.1 (±5.6) 67.0 (±5.5) 67.0 (±5.5) 67.3 (±5.5) 68.2 (±5.5)
13-17 yrs 643 § 8.3 (±2.8) 14.6 (±3.6) 33.5 (±5.5) 44.7 (±5.8) 49.2 (±6.0) 52.6 (±6.1) 52.8 (±6.1) 53.1 (±6.1) 53.3 (±6.1) 53.3 (±6.1)
Adults
18+ yrs 311 § § 11.2 (±4.7) 23.2 (±6.5) 27.4 (±7.1) 29.8 (±7.1) 33.1 (±7.8) 34.7 (±8.0) 34.7 (±8.0) 34.7 (±8.0) 35.2 (±8.0)
18-64 yrs 202 0.0 (±0.0) § 9.6 (±5.1) 20.1 (±7.3) 23.8 (±7.8) 25.8 (±8.0) 29.4 (±9.0) 30.0 (±9.0) 30.0 (±9.0) 30.0 (±9.0) 30.0 (±9.0)
18-64 yrs
at high risk
45 0.0 (±0.0) § § § § § 36.4 (±20.4)|| 36.4 (±20.4)|| 36.4 (±20.4)|| 36.4 (±20.4)|| 36.4 (±20.4)||
18-64 yrs
not at high
risk
154 0.0 (±0.0) § § 16.4 (±7.4) 21.1 (±8.8) 23.8 (±9.0) 26.5 (±10.0) 27.2 (±10.2)|| 27.2 (±10.2)|| 27.2 (±10.2)|| 27.2 (±10.2)||
18-49 yrs 135 0.0 (±0.0) § 11.3 (±6.5) 21.6 (±8.6) 26.1 (±10.0) 28.8 (±10.2)|| 31.5 (±11.2)|| 32.0 (±11.2)|| 32.0 (±11.2)|| 32.0 (±11.2)|| 32.0 (±11.2)||
18-49 yrs
at high risk
†† †† †† †† †† †† †† †† †† †† ††
18-49 yrs
not at high
risk
111 0.0 (±0.0) § § 16.5 (±8.6) 21.9 (±10.6)|| 25.2 (±11.2)|| 28.6 (±12.3)|| 29.1 (±12.3)|| 29.1 (±12.3)|| 29.1 (±12.3)|| 29.1 (±12.3)||
50-64 yrs 67 0.0 (±0.0) 0.0 (±0.0) § § § § § § § § §
65+ yrs 109 § § § 38.2 (±14.7)|| 44.7 (±14.5)|| 49.9 (±14.9)|| 51.1 (±14.9)|| 56.9 (±15.3)|| 56.9 (±15.3)|| 56.9 (±15.3)|| 59.5 (±16.1)||

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 2016. 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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Texas-City of Houston, National Immunization Survey-Flu (NIS-Flu) and Behavioral Risk Factor Surveillance System (BRFSS), 2015-16 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 1,544 3.9 (±1.8) 10.3 (±2.3) 21.9 (±3.5) 37.8 (±4.4) 49.9 (±4.4) 57.2 (±4.5) 61.7 (±4.6) 63.5 (±4.6) 64.3 (±4.6) 64.8 (±4.6) 64.9 (±4.6)
6 mos-4 yrs 466 5.7 (±2.9) 10.3 (±3.6) 25.9 (±6.5) 39.8 (±6.9) 54.3 (±7.2) 66.4 (±7.4) 70.7 (±7.1) 72.4 (±7.1) 72.8 (±7.1) 72.8 (±7.1) 72.8 (±7.1)
5-12 yrs 665 § 8.4 (±2.7) 18.8 (±5.1) 38.9 (±7.2) 50.6 (±6.8) 56.3 (±6.9) 59.3 (±6.8) 62.0 (±6.8) 63.4 (±6.9) 63.9 (±7.0) 64.2 (±7.0)
13-17 yrs 413 § 14.0 (±6.1) 23.5 (±6.8) 34.1 (±7.2) 44.5 (±7.6) 49.4 (±7.9) 56.5 (±8.6) 57.0 (±8.5) 57.0 (±8.5) 57.8 (±8.6) 57.8 (±8.6)
Adults
18+ yrs 1,444 § § 10.9 (±3.9) 25.4 (±5.5) 32.0 (±6.3) 34.7 (±6.5) 37.4 (±6.7) 37.6 (±6.7) 39.3 (±7.3) 40.8 (±7.8) 42.5 (±8.4)
18-64 yrs 794 § § 9.3 (±4.1) 22.3 (±6.1) 28.0 (±6.7) 30.2 (±7.1) 32.7 (±7.3) 33.0 (±7.3) 35.0 (±8.0) 35.0 (±8.0) 37.2 (±9.2)
18-64 yrs
at high risk
207 0.0 (±0.0) § § 38.4 (±15.7)|| 38.7 (±15.7)|| 43.0 (±16.1)|| 47.9 (±16.7)|| 47.9 (±16.7)|| 55.9 (±20.0)|| 56.0 (±20.0)|| 56.0 (±20.0)||
18-64 yrs
not at high
risk
578 § § 7.6 (±4.3) 19.0 (±6.3) 26.1 (±7.4) 27.7 (±7.6) 29.4 (±7.8) 29.8 (±8.0) 29.8 (±8.0) 29.8 (±8.0) 32.7 (±9.8)
18-49 yrs 412 § § 9.6 (±5.1) 21.7 (±7.3) 27.5 (±8.0) 29.4 (±8.4) 31.3 (±8.6) 31.7 (±8.6) 34.4 (±9.8) 34.4 (±9.8) 36.8 (±11.0)||
18-49 yrs
at high risk
62 0.0 (±0.0) § § 39.0 (±21.8)|| 39.1 (±21.8)|| 40.8 (±21.8)|| 40.8 (±21.8)|| 40.8 (±21.8)|| 56.1 (±29.4)|| 56.1 (±29.4)|| 56.1 (±29.4)||
18-49 yrs
not at high
risk
343 § § § 19.3 (±7.6) 26.0 (±8.6) 28.0 (±9.0) 30.3 (±9.4) 30.8 (±9.4) 30.8 (±9.4) 30.8 (±9.4) 34.0 (±11.4)||
50-64 yrs 382 0.0 (±0.0) § § 23.6 (±10.4)|| 29.5 (±12.0)|| 32.2 (±12.3)|| 36.1 (±13.7)|| 36.1 (±13.7)|| 36.1 (±13.7)|| 36.3 (±13.7)|| 36.3 (±13.7)||
65+ yrs 650 0.0 (±0.0) § 19.3 (±10.4)|| 41.4 (±12.7)|| 52.0 (±13.1)|| 57.6 (±13.3)|| 60.7 (±13.5)|| 60.8 (±13.5)|| 60.9 (±13.5)|| 70.3 (±19.2)|| 70.3 (±19.2)||

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 2016. 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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Texas-Rest of State**, 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 10,740 1.7 (±0.6) 7.9 (±1.1) 17.9 (±1.6) 35.2 (±2.2) 46.0 (±2.5) 50.4 (±2.5) 53.7 (±2.6) 56.9 (±2.7) 57.6 (±2.7) 59.1 (±3.0) 59.7 (±3.1)
6 mos-4 yrs 3,278 2.7 (±1.5) 10.5 (±2.8) 23.8 (±3.2) 40.7 (±3.6) 52.0 (±4.0) 56.1 (±4.1) 60.8 (±4.1) 66.8 (±4.8) 67.5 (±4.8) 71.6 (±5.9) 72.0 (±5.9)
5-12 yrs 4,369 1.1 (±0.4) 6.7 (±1.3) 16.8 (±2.3) 35.4 (±3.4) 47.1 (±3.9) 51.0 (±3.8) 53.9 (±3.8) 56.9 (±3.9) 57.3 (±3.9) 57.9 (±4.0) 58.9 (±4.2)
13-17 yrs 3,093 § 7.9 (±2.2) 15.1 (±2.8) 30.5 (±3.9) 38.9 (±4.3) 44.6 (±4.8) 47.1 (±4.9) 47.7 (±4.9) 49.0 (±4.9) 49.3 (±4.9) 49.4 (±4.9)
Adults
18+ yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs —** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-64 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs —** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
at high risk
—** —** —** —** —** —** —** —** —** —** —**
18-49 yrs
not at high
risk
—** —** —** —** —** —** —** —** —** —** —**
50-64 yrs —** —** —** —** —** —** —** —** —** —** —**
65+ yrs —** —** —** —** —** —** —** —** —** —** —**

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Guam, 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 2,719 7.9 (±1.9) 18.5 (±2.6) 27.9 (±3.3) 40.7 (±4.0) 49.7 (±4.4) 53.6 (±4.6) 55.9 (±4.7) 58.0 (±4.8) 59.9 (±4.9) 61.0 (±4.8) 62.1 (±4.8)
6 mos-4 yrs 795 3.9 (±2.2) 12.5 (±4.6) 21.7 (±5.3) 34.1 (±6.5) 48.9 (±7.9) 55.5 (±8.2) 60.0 (±8.5) 63.5 (±8.7) 65.4 (±8.8) 66.6 (±9.0) 67.3 (±9.1)
5-12 yrs 1,217 8.3 (±2.5) 20.2 (±4.1) 30.0 (±5.3) 46.4 (±7.1) 53.0 (±7.7) 56.0 (±8.0) 58.2 (±8.2) 59.7 (±8.3) 61.3 (±8.5) 63.0 (±8.2) 64.9 (±7.9)
13-17 yrs 707 10.3 (±4.3) 20.4 (±4.9) 29.6 (±5.8) 37.0 (±6.1) 45.2 (±6.3) 48.5 (±6.4) 49.3 (±6.4) 51.5 (±6.5) 53.9 (±6.5) 54.1 (±6.5) 54.5 (±6.6)
Adults
18+ yrs 1,165 § 2.8 (±1.0) 6.9 (±1.6) 13.7 (±2.4) 18.6 (±2.7) 22.6 (±3.1) 26.9 (±3.3) 29.2 (±3.7) 30.2 (±3.7) 31.7 (±4.1) 31.7 (±4.1)
18-64 yrs 943 § 2.7 (±1.2) 6.5 (±1.8) 13.2 (±2.5) 17.2 (±2.9) 20.8 (±3.3) 25.2 (±3.7) 27.1 (±3.9) 28.2 (±4.1) 29.9 (±4.5) 29.9 (±4.5)
18-64 yrs
at high risk
199 § § § 13.1 (±5.7) 17.0 (±6.5) 22.1 (±7.4) 27.3 (±8.4) 27.3 (±8.4) 27.3 (±8.4) 30.4 (±9.8) 30.4 (±9.8)
18-64 yrs
not at high
risk
734 § 2.9 (±1.2) 6.9 (±2.0) 13.4 (±2.9) 17.6 (±3.3) 20.8 (±3.7) 25.0 (±4.1) 27.5 (±4.5) 28.8 (±4.7) 30.1 (±5.1) 30.1 (±5.1)
18-49 yrs 587 § 2.6 (±1.4) 6.6 (±2.2) 13.2 (±3.1) 16.4 (±3.5) 19.0 (±3.9) 24.4 (±4.5) 26.7 (±4.9) 27.8 (±5.1) 29.8 (±5.5) 29.8 (±5.5)
18-49 yrs
at high risk
70 § § § § § § 22.5 (±11.8)|| 22.5 (±11.8)|| 22.5 (±11.8)|| 29.3 (±16.7)|| 29.3 (±16.7)||
18-49 yrs
not at high
risk
511 § 2.5 (±1.4) 6.6 (±2.4) 13.4 (±3.3) 17.0 (±3.9) 20.1 (±4.3) 25.0 (±4.9) 27.8 (±5.3) 29.0 (±5.5) 30.3 (±6.1) 30.3 (±6.1)
50-64 yrs 356 § § 6.2 (±2.5) 13.1 (±4.3) 19.6 (±5.3) 25.7 (±6.3) 27.4 (±6.5) 28.5 (±6.7) 29.7 (±6.9) 30.5 (±6.9) 30.5 (±6.9)
65+ yrs 222 § § 10.7 (±4.9) 17.8 (±6.1) 30.8 (±7.6) 37.5 (±8.4) 42.0 (±8.8) 47.1 (±9.4) 47.1 (±9.4) 47.1 (±9.4) 47.1 (±9.4)

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 2016. All other estimates are for persons interviewed September (BRFSS) or October (NIS-Flu) 2015 through June 2016.

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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

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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 2016. 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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, Puerto Rico, 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 6,297 3.9 (±1.0) 13.5 (±1.6) 19.6 (±1.8) 25.5 (±2.0) 31.0 (±2.3) 33.5 (±2.5) 36.1 (±2.5) 38.0 (±2.7) 39.2 (±2.7) 39.4 (±2.7) 40.3 (±2.7)
6 mos-4 yrs 1,769 4.8 (±1.4) 14.5 (±2.6) 21.0 (±3.2) 27.7 (±3.5) 34.3 (±3.8) 37.2 (±3.9) 40.2 (±4.1) 43.5 (±4.3) 45.6 (±4.5) 46.2 (±4.6) 47.9 (±4.7)
5-12 yrs 3,627 3.9 (±1.0) 14.0 (±1.9) 20.5 (±2.2) 27.6 (±2.5) 33.0 (±3.2) 34.6 (±3.2) 37.3 (±3.3) 38.7 (±3.3) 39.9 (±3.4) 40.2 (±3.5) 41.1 (±3.5)
13-17 yrs 901 § 12.1 (±4.0) 17.2 (±4.4) 20.8 (±4.5) 25.7 (±4.8) 29.4 (±5.5) 31.4 (±5.5) 33.4 (±6.1) 33.8 (±6.1) 33.8 (±6.1) 34.0 (±6.1)
Adults
18+ yrs 3,507 § 1.8 (±0.6) 5.0 (±1.0) 9.5 (±1.4) 14.0 (±1.8) 17.2 (±2.0) 20.5 (±2.2) 23.2 (±2.5) 24.1 (±2.9) 24.1 (±2.9) 24.1 (±2.9)
18-64 yrs 2,165 § 1.6 (±0.8) 4.4 (±1.2) 7.8 (±1.6) 11.0 (±2.0) 13.2 (±2.2) 16.6 (±2.5) 19.5 (±3.1) 20.0 (±3.3) 20.0 (±3.3) 20.0 (±3.3)
18-64 yrs
at high risk
643 § § 3.9 (±1.6) 9.1 (±2.9) 13.7 (±3.9) 16.4 (±4.3) 19.0 (±4.7) 22.0 (±5.5) 24.0 (±6.7) 24.0 (±6.7) 24.0 (±6.7)
18-64 yrs
not at high
risk
1,518 § 1.6 (±0.8) 4.6 (±1.6) 7.2 (±1.8) 9.9 (±2.2) 11.9 (±2.5) 15.6 (±3.1) 18.5 (±3.7) 18.5 (±3.7) 18.5 (±3.7) 18.5 (±3.7)
18-49 yrs 1,242 § 2.0 (±1.0) 4.9 (±1.8) 7.5 (±2.0) 10.5 (±2.4) 12.2 (±2.7) 16.6 (±3.3) 19.9 (±4.1) 19.9 (±4.1) 19.9 (±4.1) 19.9 (±4.1)
18-49 yrs
at high risk
247 § § § § 9.4 (±4.7) 11.0 (±5.1) 13.7 (±5.7) 16.9 (±8.2) 16.9 (±8.2) 16.9 (±8.2) 16.9 (±8.2)
18-49 yrs
not at high
risk
992 § 1.9 (±1.0) 5.1 (±2.0) 7.8 (±2.4) 10.7 (±2.7) 12.4 (±3.1) 17.2 (±3.9) 20.6 (±4.7) 20.6 (±4.7) 20.6 (±4.7) 20.6 (±4.7)
50-64 yrs 923 § § 3.5 (±1.4) 8.4 (±2.4) 12.0 (±3.1) 15.1 (±3.5) 16.5 (±3.7) 18.6 (±4.3) 20.1 (±5.1) 20.1 (±5.1) 20.1 (±5.1)
65+ yrs 1,342 § 2.3 (±1.0) 7.2 (±1.6) 16.1 (±2.5) 25.7 (±3.3) 32.8 (±3.7) 35.6 (±3.9) 37.7 (±4.1) 39.4 (±5.1) 39.4 (±5.1) 39.4 (±5.1)

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 2016. 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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years and adults 18 years and older, U.S. Virgin Islands, 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 2,407 3.5 (±1.3) 12.2 (±2.6) 18.8 (±3.4) 26.4 (±3.9) 29.7 (±4.0) 31.2 (±4.1) 33.3 (±4.3) 34.9 (±4.5) 36.4 (±4.6) 36.9 (±4.6) 38.2 (±4.8)
6 mos-4 yrs 603 4.5 (±2.4) 13.5 (±6.7) 21.1 (±7.6) 28.3 (±7.8) 32.9 (±8.1) 34.7 (±8.2) 41.3 (±9.4) 42.4 (±9.4) 46.9 (±10.0) 48.1 (±10.0) 50.9 (±10.5)||
5-12 yrs 1,257 § 12.5 (±3.7) 20.1 (±4.8) 26.4 (±5.4) 29.4 (±5.7) 31.4 (±5.9) 32.0 (±5.9) 32.9 (±6.0) 33.8 (±6.1) 33.8 (±6.1) 35.3 (±6.3)
13-17 yrs 547 § 10.8 (±4.2) 15.3 (±6.5) 25.0 (±7.6) 27.7 (±8.0) 28.4 (±8.0) 28.9 (±8.0) 31.7 (±8.8) 31.7 (±8.8) 32.2 (±8.8) 32.2 (±8.8)
Adults
18+ yrs 386 § § § 6.5 (±2.5) 9.2 (±3.3) 9.2 (±3.3) 9.2 (±3.3) 9.2 (±3.3) 9.2 (±3.3) 9.2 (±3.3) 9.2 (±3.3)
18-64 yrs 246 § § § 4.4 (±2.5) 5.3 (±2.7) 5.3 (±2.7) 5.3 (±2.7) 5.3 (±2.7) 5.3 (±2.7) 5.3 (±2.7) 5.3 (±2.7)
18-64 yrs
at high risk
57 § § § § § § § § § § §
18-64 yrs
not at high
risk
187 0.0 (±0.0) 0.0 (±0.0) § § § § § § § § §
18-49 yrs 122 0.0 (±0.0) 0.0 (±0.0) § § § § § § § § §
18-49 yrs
at high risk
†† †† †† †† †† †† †† †† †† †† ††
18-49 yrs
not at high
risk
100 0.0 (±0.0) 0.0 (±0.0) § § § § § § § § §
50-64 yrs 124 § § § § § § § § § § §
65+ yrs 140 § § § 16.4 (±7.6) 24.9 (±10.0) 24.9 (±10.0) 24.9 (±10.0) 24.9 (±10.0) 24.9 (±10.0) 24.9 (±10.0) 24.9 (±10.0)

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 2016. All other estimates are for persons interviewed September (BRFSS) or October (NIS-Flu) 2015 through June 2016.

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 Flu Vaccination Coverage, United States, 2016-17 Influenza Season.

§ 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.