Pandemic Influenza These resources provide information about pandemic influenza. American Public Health Association (APHA) Get Ready for the Flu Campaign DC Department of Health Pandemic Flu video APHA Influenza Preparedness  Influenza Pandemic Preparedness, WHO Pandemicflu.gov       * This document is presented in Portable Document Format (PDF). A PDF reader is required for viewing. Download a PDF Reader or Learn More About PDFs.