For information on seasonal influenza, go to Seasonal Influenza Information for Medical and Public Health Professionals.

For information on pandemic influenza, go to Pandemic Influenza Information for Medical and Public Health Professionals.

For information on variant (swine-origin) influenza viruses, go to Variant Influenza Viruses Information for Medical and Public Health Professionals.

Websites

Epidemiology

General Information

Clinical Evaluation and Management

Laboratory Testing

Infection Control

Public Health Response (see also Infection Control)

Travelers' Information

Avian Influenza in Animals