Content on this page was developed during the 2009-2010 H1N1 pandemic and has not been updated.
- The H1N1 virus that caused that pandemic is now a regular human flu virus and continues to circulate seasonally worldwide.
- The English language content on this website is being archived for historic and reference purposes only.
- For current, updated information on seasonal flu, including information about H1N1, see the CDC Seasonal Flu website.
NOTE:This page is not intended as a stand-alone Web document and is intended to serve merely as a Section 508-accessible version of the PowerPoint presentation "2009 H1N1: Overview of a Pandemic, April 2009 - August 2010."
2009 H1N1: Overview of a Pandemic
Where are we now?
- During the 2010-2011 flu season, CDC expects the 2009 H1N1 virus to cause illness again along with other influenza viruses
- The 2010-2011 flu vaccine is expected to protect against 2009 H1N1 (and an H3N2 virus and an influenza B virus)
What You Can Do
- Take time to get a flu vaccine
- Take everyday preventive actions to stop the spread of germs
- Take flu antiviral drugs if your doctor prescribes them
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