2015 IISAR Data Participation Rates
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This website is archived for historical purposes and is no longer being maintained or updated.
June 16, 2017: Content on this page kept for historical reasons.
Child, adolescent, and adult participation rates in IIS are reported for the 2015 IISAR to monitor progress toward Healthy People 2020 objectives and program initiatives. For a discussion on the calculation and reporting of provider site participation rates in IIS, please see the 2012 Immunization Information System progress report in Morbidity and Mortality Weekly Report.
2015 CHILD Participation Table and Map
Percentage of U.S. Children < 6 years with 2+ Immunizations in IIS
Percentage of children aged <6 years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, and the District of Columbia) in 2015.
National coverage: 92% (excluding territories)
Map of this data (printable version) [1 page]
| State/City | Percentage |
|---|---|
| Alabama | 89.6% |
| Alaska | 91.6% |
| Arizona | 102.2% |
| Arkansas | 101.6% |
| California | 75.6% |
| Chicago, IL | 91.8% |
| Colorado | 99.3% |
| Connecticut | 71.8% |
| DC | 102.5% |
| Delaware | 90.5% |
| Florida | 114.3% |
| Georgia | 115.5% |
| Hawaii | 73.0% |
| Houston, TX | 129.8% |
| Idaho | 95.1% |
| Illinois* | 89.9% |
| Indiana | 97.9% |
| Iowa | 96.3% |
| Kansas | 74.7% |
| Kentucky | 26.5% |
| Louisiana | 97.2% |
| Maine | 67.4% |
| Maryland | 84.3% |
| Massachusetts | 92.0% |
| Michigan | 99.3% |
| Minnesota | 98.2% |
| Mississippi | 105.1% |
| Missouri | 79.1% |
| Montana | 100.7% |
| Nebraska | 87.3% |
| Nevada | 104.2% |
| New Hampshire | No IIS |
| New Jersey | 88.6% |
| New Mexico | 102.4% |
| New York* | 102.5% |
| New York City, NY | 109.0% |
| North Carolina | 97.4% |
| North Dakota | 96.6% |
| Ohio | 101.2% |
| Oklahoma | 89.2% |
| Oregon | 102.6% |
| Pennsylvania* | 70.5% |
| Philadelphia, PA | 102.6% |
| Rhode Island | 103.0% |
| San Antonio, TX | 92.6% |
| South Carolina | 96.5% |
| South Dakota | 100.5% |
| Tennessee | 86.5% |
| Texas* | 83.5% |
| Utah | 97.5% |
| Vermont | 103.2% |
| Virginia | 93.6% |
| Washington | 97.0% |
| West Virginia | 91.4% |
| Wisconsin | 103.1% |
| Wyoming | 92.1% |
| American Samoa | 142.8% |
|---|---|
| Guam | 63.0% |
| Marshall Islands | 76.7% |
| Federated States of Micronesia | 119.2% |
| Northern Mariana Islands | 93.2% |
| Palau | 101.0% |
| Puerto Rico | 102.3% |
| Virgin Islands | No Data |
Footnotes
* City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in child participation may be due to programmatic and/or technical changes to the immunization information system. The denominators used to calculate child participation numbers are drawn from the 2015 Census Bureau estimates for each state and city. Chicago and Houston denominators are drawn from 2015 American Communities Survey 1-year Estimates (Source: U.S. Census Bureau, Population Division Release Date: September 2016). All island territories with the exception of Puerto Rico are drawn from the 2015 CIA World Factbook Age Structure estimates. All others are drawn from Annual Estimates of the Resident Population for Selected Age Groups by Sex for the United States, States, Counties, and Puerto Rico Commonwealth and Municipios: April 1, 2010 to July 1, 2015. (Source: U.S. Census Bureau, Population Division Release Date: June 2016).
Source: Immunization Information System Annual Report, CY2015
2015 ADOLESCENT Participation Table and Map
Percentage of U.S. Adolescents 11-17 years with 2+ Adolescent Immunizations in IIS
Percentage of adolescents aged 11-17 years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, and the District of Columbia) 2015.
National coverage: 72% (excluding territories)
Map of this data (printable version) [1 page]
| State/City | Percentage |
|---|---|
| Alabama | 43.0% |
| Alaska | 72.5% |
| Arizona | 86.4% |
| Arkansas | 91.7% |
| California | 61.5% |
| Chicago, IL | 87.2% |
| Colorado | 79.6% |
| Connecticut | No Data |
| DC | 82.8% |
| Delaware | 95.6% |
| Florida | 91.8% |
| Georgia | 98.3% |
| Hawaii | 76.4% |
| Houston, TX | 98.8% |
| Idaho | 77.9% |
| Illinois* | 67.3% |
| Indiana | 89.1% |
| Iowa | 70.2% |
| Kansas | 52.4% |
| Kentucky | 20.8% |
| Louisiana | 92.2% |
| Maine | 57.7% |
| Maryland | 50.5% |
| Massachusetts | 39.9% |
| Michigan | 86.1% |
| Minnesota | 83.6% |
| Mississippi | 80.0% |
| Missouri | 45.3% |
| Montana | 71.1% |
| Nebraska | 63.7% |
| Nevada | 76.9% |
| New Hampshire | No IIS |
| New Jersey | 66.5% |
| New Mexico | 89.3% |
| New York* | 86.8% |
| New York City, NY | 101.9% |
| North Carolina | 84.1% |
| North Dakota | 82.9% |
| Ohio | 62.5% |
| Oklahoma | 68.2% |
| Oregon | 76.1% |
| Pennsylvania* | 52.0% |
| Philadelphia, PA | 94.0% |
| Rhode Island | 95.9% |
| San Antonio, TX | 72.3% |
| South Carolina | 64.7% |
| South Dakota | 77.8% |
| Tennessee | 58.1% |
| Texas* | 61.0% |
| Utah | 118.3% |
| Vermont | 84.6% |
| Virginia | 77.5% |
| Washington | 90.3% |
| West Virginia | 72.7% |
| Wisconsin | 88.1% |
| Wyoming | 70.5% |
| American Samoa | 84.0% |
|---|---|
| Guam | 34.2% |
| Marshall Islands | 18.4% |
| Federated States of Micronesia | 33.0% |
| Northern Mariana Islands | 99.4% |
| Palau | 22.5% |
| Puerto Rico | 96.4% |
| Virgin Islands | No Data |
Footnotes
* City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in adolescent participation may be due to programmatic and/or technical changes to the immunization information system. The denominators used to calculate adolescent participation numbers are drawn from the 2015 Census Bureau estimates for each state and city. Chicago and Houston denominators are drawn from 2015 American Communities Survey 1-year Estimates (Source: U.S. Census Bureau, Population Division Release Date: September 2016). All island territories with the exception of Puerto Rico are drawn from the 2015 CIA World Factbook Age Structure estimates. All others are drawn from Annual Estimates of the Resident Population for Selected Age Groups by Sex for the United States, States, Counties, and Puerto Rico Commonwealth and Municipios: April 1, 2010 to July 1, 2015. (Source: U.S. Census Bureau, Population Division Release Date: June 2016).
Source: Immunization Information System Annual Report, CY2015
2015 ADULT Participation Table and Map
Percentage of U.S. Adults 19+ years with 1+ Adult Immunizations in IIS
Percentage of adults aged 19+ years participating in an immunization information system (IIS) in the United States (including all 50 states, five cities, and the District of Columbia) in 2015.
National coverage: 38% (excluding territories)
Map of this data (printable version) [1 page]
| State/City | Percentage |
|---|---|
| Alabama | 26.3% |
| Alaska | 70.2% |
| Arizona | 40.9% |
| Arkansas | 51.5% |
| California | 29.0% |
| Chicago, IL | 37.7% |
| Colorado | 50.3% |
| Connecticut | No Data |
| DC | 37.1% |
| Delaware | 22.5% |
| Florida | 51.2% |
| Georgia | 63.3% |
| Hawaii | 28.2% |
| Houston, TX | 2.2% |
| Idaho | 50.1% |
| Illinois* | 41.7% |
| Indiana | 60.6% |
| Iowa | 71.1% |
| Kansas | 39.2% |
| Kentucky | 11.6% |
| Louisiana | 45.1% |
| Maine | 17.1% |
| Maryland | 28.9% |
| Massachusetts | 57.8% |
| Michigan | 61.2% |
| Minnesota | 95.4% |
| Mississippi | 43.2% |
| Missouri | 20.8% |
| Montana | 54.4% |
| Nebraska | 52.2% |
| Nevada | 61.3% |
| New Hampshire | No IIS |
| New Jersey | 3.6% |
| New Mexico | 59.4% |
| New York* | 13.7% |
| New York City, NY | 15.1% |
| North Carolina | 28.5% |
| North Dakota | 86.7% |
| Ohio | 49.2% |
| Oklahoma | 41.6% |
| Oregon | 79.9% |
| Pennsylvania* | 40.2% |
| Philadelphia, PA | 35.5% |
| Rhode Island | No Data |
| San Antonio, TX | 34.3% |
| South Carolina | 33.7% |
| South Dakota | 64.1% |
| Tennessee | 35.7% |
| Texas* | 1.6% |
| Utah | 85.9% |
| Vermont | 60.1% |
| Virginia | 17.7% |
| Washington | 73.7% |
| West Virginia | 47.5% |
| Wisconsin | 93.8% |
| Wyoming | 50.3% |
| American Samoa | 63.5% |
|---|---|
| Guam | 25.6% |
| Marshall Islands | 29.6% |
| Federated States of Micronesia | 55.2% |
| Northern Mariana Islands | 34.4% |
| Palau | 66.2% |
| Puerto Rico | 18.9% |
| Virgin Islands | No Data |
Footnotes
* City-based IIS participation rates are reported separately from their respective states; state rates do not include city data in their values.
Reported annual fluctuations in adult participation may be due to programmatic and/or technical changes to the immunization information system. The denominators used to calculate adult participation numbers are drawn from the 2015 Census Bureau estimates for each state and city. Chicago and Houston denominators are drawn from 2015 American Communities Survey 1-year Estimates (Source: U.S. Census Bureau, Population Division Release Date: September 2016). All island territories with the exception of Puerto Rico are drawn from the 2015 CIA World Factbook Age Structure estimates. All others are drawn from Annual Estimates of the Resident Population for Selected Age Groups by Sex for the United States, States, Counties, and Puerto Rico Commonwealth and Municipios: April 1, 2010 to July 1, 2015. (Source: U.S. Census Bureau, Population Division Release Date: June 2016).
Source: Immunization Information System Annual Report, CY2015
- Page last reviewed: June 16, 2017 (archived document)
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