The Pandemic & Flu (PANFLU) program provides planning and preparedness that are critical to help reduce the impact of a pandemic. An influenza pandemic, whether of low, moderate, high, or very high severity, will place extraordinary and sustained demands on public health and healthcare systems and on providers of essential community services. Influenza is a perennial threat, causing seasonal epidemics that require public health interventions, including annual influenza vaccinations. It provides the opportunity to continually practice and strengthen response and operational plans as well as vaccination programs across all ages to be better prepared in the event of an influenza pandemic.