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.
2009 H1N1 Flu Vaccine
Vaccines to protect against 2009 H1N1 are widely available. CDC is encouraging everyone to get vaccinated against 2009 H1N1. Those who have been patiently waiting to receive the 2009 H1N1 vaccine are now encouraged to get vaccinated. Due to early availability of, and high demand for, seasonal flu vaccine, remaining supplies of seasonal vaccine are limited. CDC continues to encourage those at highest risk from flu complications to seek seasonal flu vaccine and receive 2009 H1N1 vaccine, as recommended.
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