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University of Nebraska Medical Center

H9N2 (Avian Influenza)

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Discover comprehensive information and resources on H9N2 (Avian Influenza), including updates, situational reports, news, and published research. 

H9N2 Virus

About H9N2

According to the Centers for Disease Control and Prevention (CDC), "Avian influenza or bird flu refers to the disease caused by infection with avian (bird) influenza (flu) Type A viruses. These viruses naturally spread among wild aquatic birds worldwide and can infect domestic poultry and other bird and animal species. Bird flu viruses do not normally infect humans. However, sporadic human infections with bird flu viruses have occurred."

 

 

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CDC Updates & Situational Reports

 

  • In February 2025, China reported two human cases of H9N2. 
News