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Centers for Disease Control and Prevention


Vaccines & Immunizations

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2002 Child Participation Map

Percentage of U.S. Children >4 months and <6 years with 2+ Immunizations in Immunization Information Systems (IIS), 2002

State/Territory in Each State Percentage
Alabama 77
Alaska 55
Arizona 98
Arkansas 91
California 19
Colorado 15
Connecticut 61
DC 88
Delaware 81
Florida 28
Georgia 13
Hawaii 45
Idaho 59
Illinois 51
Indiana 43
Iowa 45
Kansas 5
Kentucky 0
Louisiana 45
Maine 41
Maryland 10
Massachusetts 6
Michigan 94
Minnesota 36
Mississippi 99
Missouri 65
Montana 43
Nebraska 27
Nevada 47
New Hampshire 3
New Jersey 15
New Mexico 0
New York 53
North Carolina 61
North Dakota 95
Ohio 18
Oklahoma 80
Oregon 94
Pennsylvania 16
Rhode Island 79
South Carolina 79
South Dakota 100
Tennessee 78
Texas 50
Utah 54
Vermont 0
Virginia 27
Washington 65
West Virginia 63
Wisconsin 78
Wyoming 6

50 states, 6 large cities, and the 8 territories/commonwealths are developing and implementing IIS or planning on developing IIS in the near future. Of the states with 0-33%, seven (14%) have regional or community IIS and six (11%) were planning/piloting a state-wide system (Colorado, Kansas, Nebraska, Vermont, New Mexico, and Wyoming). In 2002, 43% of the U.S. children less than 6 years of age had 2 or more immunizations in a state or local IIS.

CDC measures child participation in an IIS by the number of children with at least 2 immunizations in an IIS because we need to be sure that at least one immunization was reported to the IIS by a health provider. Many infants receive their first Hepatitis B vaccination at birth and this information downloads into many IIS through an electronic birth certification record and ensures that many children in the IIS have at least one immunization recorded.

Source: Immunization Registry Annual Report, CY2002

 Return to main IRAR Data Rates page

This page last modified on October 23, 2006
Content last reviewed on October 23, 2004
Content Source: National Center for Immunization and Respiratory Diseases

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