Influenza is a contagious infection of the nose, throat, and lungs. There are two main types: A and B. Each type includes different strains that change from year to year.
An influenza pandemic can occur when a non-human (novel) influenza virus changes in such a way that it is able to infect humans easily and spread easily from person to person. Examples of recent novel viruses include avian influenza A (H5N1) and avian influenza H7N9. These are non-human viruses that circulate in birds in parts of the world so there is little to no immunity against these viruses among people.
Planning Information for Specific Groups
Information for Public Health Departments
- Influenza Risk Assessment Tool - CDC
- Pandemic Influenza Risk Management Interim Guidance - WHO
- Utah Novel Influenza Disease Plan
Information for Healthcare Professionals/Providers
- Infection Control Measures for Healthcare Facilities - CDC
- Pandemic Influenza Planning and Preparedness for Health Professionals