What are the CDC criteria for suspected H1N1 influenza (swine flu)?

Updated: Apr 09, 2019
  • Author: Michael Stuart Bronze, MD; Chief Editor: Russell W Steele, MD  more...
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Answer

The CDC criteria for suspected H1N1 influenza are as follows [2] :

  • Onset of acute febrile respiratory illness within 7 days of close contact with a person who has a confirmed case of H1N1 influenza A virus infection, or

  • Onset of acute febrile respiratory illness within 7 days of travel to a community (within the United States or internationally) where one or more H1N1 influenza A cases have been confirmed, or

  • Acute febrile respiratory illness in a person who resides in a community where at least one H1N1 influenza case has been confirmed.

See Workup for more detail.


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