A Call to Action occurred on Friday, July 29, 2011 in Richmond Heights, Missouri. This kickoff event, sponsored by the St. Louis County Department of Health and the Heartland Center for Public Health Preparedness at Saint Louis University's School of Public Health, was held to introduce the 2011-2012 Health Care Worker Influenza Vaccination Campaign to increase seasonal influenza immunization rates among health care workers in the St. Louis region.

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