2017-18 Influenza Season Vaccination Coverage Estimates among Children 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, Illinois-City of Chicago, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 1,159 2.3 (±1.1) 7.2 (±1.9) 18.2 (±2.9) 38.5 (±3.8) 47.4 (±3.9) 52.4 (±4.0) 57.0 (±4.0) 59.5 (±4.1) 60.0 (±4.2) 63.2 (±5.0) 63.2 (±5.0)
6 mos-4 yrs 372 6.9 (±3.4) 19.1 (±5.3) 43.7 (±6.9) 56.0 (±7.2) 61.8 (±7.3) 68.3 (±7.3) 72.1 (±7.3) 74.1 (±7.8) 82.1 (±9.7) 82.1 (±9.7)
5-12 yrs 447 7.3 (±2.9) 18.9 (±4.4) 36.7 (±5.8) 45.5 (±6.0) 51.1 (±6.1) 55.8 (±6.2) 57.7 (±6.4) 57.7 (±6.4) 58.9 (±6.6) 58.9 (±6.6)
13-17 yrs 340 7.1 (±3.3) 16.3 (±4.8) 36.8 (±6.7) 42.6 (±6.8) 46.0 (±6.9) 48.9 (±6.9) 51.4 (±7.1) 51.4 (±7.1) 53.9 (±8.2) 53.9 (±8.2)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Illinois-Rest of State§, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 3,025 1.0 (±0.5) 5.2 (±1.0) 13.4 (±1.5) 31.9 (±2.2) 41.5 (±2.4) 45.5 (±2.5) 49.1 (±2.6) 51.1 (±2.7) 52.7 (±2.8) 52.7 (±2.8) 52.8 (±2.8)
6 mos-4 yrs 887 7.2 (±2.2) 18.0 (±3.2) 38.3 (±4.3) 49.9 (±4.7) 55.5 (±4.7) 60.3 (±4.9) 63.7 (±5.0) 66.1 (±5.4) 66.1 (±5.4) 66.5 (±5.4)
5-12 yrs 1,286 4.7 (±1.4) 13.8 (±2.3) 33.2 (±3.3) 43.8 (±3.6) 47.8 (±3.7) 51.4 (±3.8) 52.8 (±3.8) 54.4 (±4.0) 54.4 (±4.0) 54.4 (±4.0)
13-17 yrs 852 4.4 (±1.6) 9.8 (±2.3) 25.8 (±3.6) 32.7 (±4.0) 35.7 (±4.1) 38.2 (±4.3) 40.6 (±4.5) 41.6 (±4.7) 41.6 (±4.7) 41.6 (±4.7)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, New York-City of New York, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 2,232 3.1 (±0.9) 8.6 (±1.4) 24.0 (±2.3) 40.7 (±2.7) 52.8 (±2.9) 60.2 (±3.0) 64.6 (±3.0) 66.8 (±3.0) 69.3 (±3.1) 70.9 (±3.3) 71.5 (±3.3)
6 mos-4 yrs 772 3.9 (±1.9) 11.3 (±3.0) 30.8 (±4.3) 48.6 (±4.8) 59.6 (±4.9) 67.2 (±4.8) 69.7 (±4.9) 72.8 (±5.0) 74.0 (±5.1) 75.9 (±5.3) 75.9 (±5.3)
5-12 yrs 892 2.6 (±1.2) 7.5 (±2.0) 22.5 (±3.4) 38.7 (±4.0) 52.1 (±4.3) 60.0 (±4.3) 66.8 (±4.3) 68.0 (±4.4) 70.9 (±4.5) 73.0 (±4.7) 74.1 (±4.8)
13-17 yrs 568 3.2 (±1.6) 8.1 (±2.7) 20.7 (±4.0) 37.5 (±5.1) 48.1 (±5.3) 54.5 (±5.5) 56.4 (±5.5) 59.8 (±5.7) 62.4 (±6.0) 62.4 (±6.0) 62.4 (±6.0)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, New York-Rest of State§, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 1,973 1.2 (±0.6) 3.6 (±1.0) 15.6 (±2.0) 33.7 (±2.8) 47.1 (±3.2) 51.7 (±3.3) 54.8 (±3.5) 56.5 (±3.5) 58.5 (±3.8) 59.4 (±3.9) 59.4 (±3.9)
6 mos-4 yrs 674 7.5 (±2.7) 19.4 (±3.9) 39.0 (±5.3) 52.9 (±5.7) 58.2 (±5.9) 61.6 (±6.1) 63.6 (±6.2) 64.7 (±6.4) 66.5 (±6.7) 66.5 (±6.7)
5-12 yrs 802 2.5 (±1.1) 15.8 (±3.1) 35.0 (±4.2) 50.7 (±4.7) 55.8 (±4.8) 60.5 (±5.0) 62.0 (±5.2) 65.8 (±5.9) 65.8 (±5.9) 65.8 (±5.9)
13-17 yrs 497 12.4 (±3.2) 27.8 (±4.7) 37.2 (±5.3) 40.5 (±5.6) 40.5 (±5.6) 41.9 (±5.8) 41.9 (±5.8) 43.1 (±6.2) 43.1 (±6.2)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Pennsylvania-Philadelphia County, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 1,926 2.6 (±0.9) 9.2 (±1.7) 23.8 (±2.5) 42.4 (±3.0) 52.9 (±3.1) 61.1 (±3.1) 66.6 (±3.3) 70.4 (±3.3) 72.3 (±3.4) 72.5 (±3.4) 73.7 (±3.4)
6 mos-4 yrs 614 3.2 (±1.5) 11.2 (±3.2) 28.2 (±4.6) 47.9 (±5.6) 61.3 (±5.6) 70.5 (±5.4) 76.0 (±5.1) 79.2 (±4.9) 80.6 (±5.0) 81.2 (±5.1) 82.4 (±5.1)
5-12 yrs 797 3.1 (±1.7) 9.2 (±2.6) 23.5 (±3.8) 42.5 (±4.5) 52.1 (±4.6) 60.4 (±4.7) 66.4 (±4.7) 71.2 (±4.7) 73.2 (±4.8) 73.2 (±4.8) 74.8 (±5.0)
13-17 yrs 515 7.4 (±2.8) 20.2 (±4.3) 37.0 (±5.4) 46.6 (±5.8) 53.5 (±6.0) 57.7 (±6.2) 59.9 (±6.3) 62.0 (±6.5) 62.0 (±6.5) 62.0 (±6.5)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Pennsylvania-Rest of State§, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 2,589 0.6 (±0.3) 4.2 (±1.0) 16.8 (±1.9) 40.1 (±2.7) 52.2 (±2.9) 56.4 (±3.0) 59.7 (±3.0) 61.5 (±3.1) 62.7 (±3.2) 63.6 (±3.3) 64.0 (±3.3)
6 mos-4 yrs 841 6.7 (±2.1) 21.2 (±3.5) 48.5 (±4.8) 61.3 (±5.0) 66.4 (±5.1) 68.9 (±5.1) 70.2 (±5.1) 72.5 (±5.4) 74.0 (±5.6) 74.1 (±5.6)
5-12 yrs 1,064 3.6 (±1.3) 16.7 (±2.8) 39.3 (±3.9) 50.4 (±4.2) 55.2 (±4.3) 59.5 (±4.3) 62.4 (±4.4) 62.8 (±4.5) 64.0 (±4.9) 64.8 (±5.0)
13-17 yrs 684 12.6 (±3.3) 33.0 (±5.0) 46.0 (±5.5) 48.4 (±5.6) 51.2 (±5.7) 51.7 (±5.7) 52.9 (±5.9) 52.9 (±5.9) 52.9 (±5.9)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Texas-Bexar County, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 1,955 1.9 (±0.8) 9.5 (±2.1) 19.8 (±2.7) 37.7 (±3.2) 47.4 (±3.3) 51.2 (±3.3) 57.0 (±3.4) 59.1 (±3.5) 60.4 (±3.5) 60.4 (±3.5) 60.6 (±3.5)
6 mos-4 yrs 601 6.6 (±2.2) 17.1 (±3.9) 35.2 (±5.5) 48.6 (±5.8) 54.7 (±6.0) 57.8 (±6.2) 61.9 (±6.5) 64.7 (±6.8) 64.7 (±6.8) 64.7 (±6.8)
5-12 yrs 833 9.8 (±2.7) 19.4 (±3.4) 36.7 (±4.3) 46.8 (±4.6) 50.4 (±4.7) 57.6 (±5.0) 59.9 (±5.1) 60.7 (±5.1) 60.7 (±5.1) 61.1 (±5.2)
13-17 yrs 521 11.1 (±5.3) 22.5 (±6.3) 41.4 (±6.5) 47.4 (±6.5) 49.9 (±6.5) 55.2 (±6.5) 55.4 (±6.4) 56.4 (±6.5) 56.4 (±6.5) 56.4 (±6.5)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Texas-City of Houston, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 1,639 2.9 (±1.1) 9.8 (±1.8) 19.8 (±2.5) 38.0 (±3.1) 49.4 (±3.3) 55.4 (±3.3) 60.2 (±3.4) 62.7 (±3.4) 64.0 (±3.5) 64.9 (±3.6) 65.0 (±3.6)
6 mos-4 yrs 526 2.2 (±1.2) 10.9 (±3.6) 23.6 (±4.9) 42.1 (±5.5) 58.1 (±5.6) 65.1 (±5.5) 71.2 (±5.4) 72.8 (±5.4) 73.1 (±5.4) 74.4 (±5.7) 75.0 (±5.7)
5-12 yrs 684 3.4 (±1.7) 10.7 (±2.8) 19.3 (±3.7) 40.1 (±4.7) 50.8 (±4.8) 55.9 (±4.9) 60.4 (±4.9) 63.4 (±4.9) 64.7 (±5.1) 65.5 (±5.1) 65.5 (±5.1)
13-17 yrs 429 7.2 (±3.0) 16.9 (±4.3) 30.0 (±5.3) 38.3 (±5.9) 44.6 (±6.3) 48.6 (±6.6) 50.8 (±6.8) 53.5 (±7.4) 53.5 (±7.4) 53.5 (±7.4)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Texas-Rest of State§, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 6,919 1.8 (±0.5) 7.6 (±1.0) 17.6 (±1.4) 34.6 (±1.8) 45.0 (±1.9) 50.4 (±2.0) 53.7 (±2.0) 55.9 (±2.1) 56.7 (±2.1) 57.1 (±2.1) 57.3 (±2.1)
6 mos-4 yrs 2,462 2.1 (±0.8) 8.1 (±1.8) 19.8 (±2.6) 39.0 (±3.3) 50.7 (±3.4) 56.7 (±3.5) 60.3 (±3.6) 63.6 (±3.6) 64.0 (±3.6) 64.5 (±3.6) 64.5 (±3.6)
5-12 yrs 1,725 1.7 (±0.8) 7.4 (±1.6) 17.7 (±2.3) 36.2 (±2.9) 47.1 (±3.1) 52.6 (±3.2) 56.0 (±3.3) 58.6 (±3.4) 59.6 (±3.4) 60.0 (±3.5) 60.4 (±3.5)
13-17 yrs 2,732 1.6 (±0.8) 7.4 (±1.5) 15.8 (±2.1) 29.2 (±2.5) 37.8 (±2.8) 42.6 (±3.0) 45.5 (±3.1) 46.4 (±3.1) 47.0 (±3.1) 47.3 (±3.2) 47.3 (±3.2)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Guam, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 2,041 5.1 (±1.5) 21.0 (±5.5) 29.5 (±5.2) 44.9 (±4.9) 52.5 (±4.5) 56.5 (±4.3) 59.3 (±4.1) 61.9 (±4.0) 63.6 (±3.9) 65.1 (±3.8) 65.8 (±3.8)
6 mos-4 yrs 612 5.1 (±2.5) 12.2 (±3.9) 20.2 (±5.2) 41.6 (±10.4)|| 50.5 (±9.3) 56.8 (±8.5) 61.4 (±7.9) 66.7 (±7.2) 69.8 (±6.8) 71.4 (±6.6) 72.2 (±6.5)
5-12 yrs 863 4.4 (±2.1) 22.8 (±9.4) 31.7 (±8.7) 45.5 (±7.5) 54.2 (±6.8) 57.7 (±6.4) 60.3 (±6.2) 62.5 (±6.0) 63.3 (±6.0) 65.7 (±5.8) 66.6 (±5.7)
13-17 yrs 566 6.0 (±3.2) 25.2 (±9.7) 33.7 (±9.2) 46.6 (±8.2) 51.6 (±7.8) 54.4 (±7.5) 56.4 (±7.3) 57.4 (±7.2) 59.2 (±7.1) 59.2 (±7.1) 59.4 (±7.1)

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, Puerto Rico, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 mos-4 yrs
5-12 yrs
13-17 yrs

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.

Cumulative monthly influenza vaccination coverage estimates* among children 6 months through 17 years, U.S. Virgin Islands, National Immunization Survey-Flu (NIS-Flu), 2017-18 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 mos-4 yrs
5-12 yrs
13-17 yrs

Abbreviation: CI = confidence interval half-width

* All coverage estimates are for children reported to be vaccinated July 2017 through May 2018. Coverage estimates for children living in Guam included interviews April through
June 2018. All other estimates are for children with interviews October 2017 through June 2018.

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 Estimates of Flu Vaccination Coverage among Children — United States, 2017–18 Flu Season.

Estimates not reliable because relative standard error is >0.3.

§ “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.

|| Estimates might not be reliable because confidence interval half-width is >10.

Data were not collected by the NIS-Flu in Puerto Rico or the U.S. Virgin Islands.