Evaluation of the frequency of immunization information system use for public health research

Figures & data

Figure 1. Research papers published between 1999 and July 3, 2012 utilizing data from immunization information systems, identified through a review of a CDC database [54] and PubMed, with searches conducted between February 13, 2012 and July 3, 2012.

Table 1. Number of papers published using IIS data from individual Immunization Programs and the number of minimum functional standards met by those Immunization Programs as of 2009

Immunization Program	Number of Papers
Michigan	9
Philadelphia	8
New York City	6
Arizona	3
North Carolina	2
Oregon	2
Houston	2
Connecticut	2
Wisconsin	1
District of Columbia	1
Minnesota	1
Utah	1
Washington State	1
San Antonio	1
Chicago	1
Colorado	1
Delaware	1
North Dakota	1

Figure 2. Number of published research papers using data from an immunization information system, by year of publication, 1999–2011. Note that only January–July was included for 2012, so the three publications from 2012 are not included in this figure