239126 Mapping our course: Using GIS to plan targeted outreach to improve flu immunization rates in Los Angeles County's African American population

Monday, October 31, 2011: 2:30 PM

Fred Dominguez, MD, MPH , Health Education Administration, Los Angeles County Department of Public Health, Los Angeles, CA
Jessica Marshall, MPH, CHES , Community Health Services, Los Angeles County Department of Public Health, Inglewood, CA
Jacqueline Valenzuela, MPH, CHES , Health Education Administration, Los Angeles County Department of Health Services, Los Angeles, CA
The LA County (LAC) Public Health Department (DPH), mobilized to prevent the spread of H1N1 flu by organizing 109 vaccination clinics at community based sites (e.g. Faith Based Organizations (FBO)) from October-December 2009. Over 200,000 vaccinations were distributed countywide.

African Americans comprise 9% of LAC's population, yet accounted for less than 3% of the H1N1 vaccinations distributed. These data parallel other immunization disparities and highlights the need to implement new strategies alongside trusted community partners to improve flu immunization rates in this population.

One of the highest proportions of LAC's African American populations resides in Service Planning Area 8 (SPA 8). Partnering with FBOs has proven successful in promoting H1N1 immunization in SPAs. Therefore, expanding SPA 8's FBO partnerships in the African American community is critical in improving flu immunization rates.

To accomplish this, GIS maps of FBO's were created using data from InfoUSAŠ. FBO's square footage served as a proxy for estimating congregation size. Church addresses were geocoded using ESRI's ArcMap 9.3. Demographic data was abstracted by the U.S. Census for the African American population and then mapped to targeted geographic areas to show population density.

Using ESRI's Map Book, individual city maps were created of SPA 8 targeted churches. Additionally, using the density tool, clusters of large churches were identified to limit travel time to conduct flu outreach.

Limited staffing and fiscal resources made GIS mapping an essential planning tool for identifying highest African American population density to church size in order to engage FBOs in flu vaccination.

Learning Areas:
Administer health education strategies, interventions and programs
Advocacy for health and health education
Assessment of individual and community needs for health education
Diversity and culture
Planning of health education strategies, interventions, and programs

Learning Objectives:
1. Participants will be able to identify at least one GIS tool function to anaylze demographic data. 2. Participants will be able to describe at least one process step from obtaining specific data to creating and presenting a strategic map.

Keywords: Geographic Information Systems, Community Health Assessment

Presenting author's disclosure statement:

Qualified on the content I am responsible for because: Certified in GIS
Any relevant financial relationships? No

I agree to comply with the American Public Health Association Conflict of Interest and Commercial Support Guidelines, and to disclose to the participants any off-label or experimental uses of a commercial product or service discussed in my presentation.