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
April 2009 - August 2010
- Background on Influenza
- Tracking Influenza
- Preparing for a Pandemic
- Detection of the 2009 H1N1 Virus
- Impact of 2009 H1N1
- 2009 H1N1 Accomplishments (Part 1 of 3)
- 2009 H1N1 Accomplishments (Part 2 of 3)
- 2009 H1N1 Accomplishments (Part 3 of 3)
Get email updates
To receive weekly email updates about this site, enter your email address:
- Centers for Disease Control and Prevention
1600 Clifton Rd
Atlanta, GA 30333
TTY: (888) 232-6348
- Contact CDC-INFO