Reports of Human Infections with Variant Viruses

This page contains links to previous reports of human infections with variant influenza viruses that normally circulate in swine.

• CDC Reports Cases 14-17 of H3N2v Infection; Shares Advice for Safe Fair-Going
• Notes from the Field: Outbreak of Influenza A (H3N2) Virus Among Persons and Swine at a County Fair — Indiana, July 2012. MMWR 2012; 61(29); 561.
• Antibodies Cross-Reactive to Influenza A (H3N2) Variant Virus and Impact of 2010–11 Seasonal Influenza Vaccine on Cross-Reactive Antibodies — United States. MMWR 2012; 61(14); 237-241.
• Human Infections with Novel Reassortant Influenza A(H3N2)v Viruses, United States, 2011. EID 2012 May; 18(5)
• First H3N2 Variant Virus Infection Reported For 2012
• Update: Influenza A(H3N2)v Transmission and Guidelines—Five States, 2011. MMWR 2011; 60(Early Release); 1-4
• Have You Heard, December 23, 2011: CDC Confirms Detection of A Different Influenza A Variant Virus
• Have You Heard, December 9, 2011: CDC confirms two human infections with novel influenza viruses
• Update: Influenza Activity – United States, October 2, 2011-November 26, 2011. MMWR 2011; 60(48);1646-1649
• Limited Human-to-Human Transmission of Novel Influenza A (H3N2) Virus — Iowa, November 2011. MMWR Dispatch 2011; 60(47):1615-1617
• Have You Heard, November 22, 2011: Iowa Reports Novel Influenza Infections in Three Children
• Have You Heard, November 4, 2011: CDC Confirms the 6th and 7th Cases of Swine-Origin Influenza A H3N2 Virus with 2009 H1N1 M Gene
• Have You Heard, October 21, 2011: CDC Confirms 5th Case of New Swine-Origin H3N2 Reassortant in Maine
• Have You Heard, September 6, 2011: Number of Swine Origin H3 Infections in Pennsylvania Rises to Three
• Swine-Origin Influenza A (H3N2) Virus Infection in Two Children — Indiana and Pennsylvania, July — August 2011. MMWR 2011; 60 (Early Release); 1-4.
• Update: Influenza Activity — United States, October 3, 2010-February 5, 2011. MMWR 2011; 60(06):175-181
• Update: Influenza Activity — United States, October 3, 2010-February 5, 2011. MMWR 2011; 60(06):175-181
• December 17, 2010 “Have You Heard”
• November 12, 2010 “Have You Heard”
• “Triple-Reassortant Swine Influenza A (H1) in Humans in the United States, 2005–2009” [262 KB, 10 pages] Information about 11 cases occurring between 2005 and 2009.