Influenza
This spring, a new influenza virus began causing illness in people and spreading around the world. Originally called “swine flu” because the virus genes were similar to some influenza viruses that infect pigs, the new virus has been named “novel H1N1.”
Find out more about novel H1N1 and CDC’s public health response.
Info for Health Professionals
- What's New & Updated!
- "Flu Shot" Vaccine Information Statement 2009-10
- "Nasal Spray" Vaccine Information Statement 2009-10
- July 29 ACIP Presentation Slides
- H1N1 Flu (Swine Flu)
- Use of Northern Hemisphere Influenza Vaccines by Travelers to the Southern Hemisphere
- 2009-10 ACIP recommendations for prevention and control of seasonal influenza with vaccines
- IDSA Diagnostic & Antiviral Guidelines
- FDA Selects 2009-2010 influenza vaccine viruses
- What's New on this Site…
- Other Flu Websites
- Avian Flu usually refers to influenza A virus found chiefly in birds, but infections can occur in humans.
- Canine Flu is a respiratory disease of dogs caused by a specific influenza A virus.
- Novel H1N1 is a new influenza virus causing illness in people and spreading around the world.
- Swine Flu is a respiratory disease of pigs caused by type A influenza.
- Pandemic Flu is virulent human flu that causes a global outbreak (pandemic) of serious illness.
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Contact Us
- 800–CDC–INFO
- (800-232-4636)
- 888–232–6348 (TTY)
- cdcinfo@cdc.gov
- Content Source: Coordinating Center for Infectious Diseases (CCID)
- National Center for Immunization and Respiratory Diseases (NCIRD)