Registries:
Immunization Information Systems
for States/Territories |
 |
| What
are Immunization Information Systems? |
Immunization
Information Systems are confidential, population-based,
computerized information systems that attempt
to collect vaccination data about all children
within a geographic area. IIS are an important
tool to increase and sustain high vaccination
coverage by consolidating vaccination records
of children from multiple providers, generating
reminder and recall vaccination notices for
each child, and providing official vaccination
forms and vaccination coverage assessments.
One of the national health objectives for 2010
is to increase to 95% the proportion of children
aged <6 years who participate in fully operational
population-based IIS.
A "fully operational" IIS includes
=>95% enrollment of all catchment area children
<6 years of age with 2 or more immunization
encounters administered according to ACIP recommendations.
In a population-based IIS, children are entered
into the IIS at birth, often through a linkage
with electronic birth records. An IIS record
also can be initiated by a health care provider
at the time of a child’s first immunization.
If an IIS includes all children in a given
geographical area and all providers are reporting
immunization information, it can provide a
single data source for all community immunization
partners. Such a population-based IIS can make
it easier to carry out the demonstrably effective
immunization strategies (e.g., reminder/recall,
AFIX, and WIC linkages) and thereby decrease
the resources needed to achieve and maintain
high levels of coverage. IIS also can be used
to enhance adult immunization services and
coverage.
The concept of IIS is not new. Many individual
practices and health plans administer immunizations
to their patients. Records of these immunizations
often are based on computerized information
systems designed for other purposes such as
billing. There also is a growing movement toward
the development of totally computerized patient
medical records. Although an IIS includes all
immunizations administered by health care providers
participating in it, only population-based
IIS are capable of providing information on
all children and all doses of vaccines administered
by all providers.
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