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Reported Infections with Variant Influenza Viruses in the United States since 2005When people are infected with influenza A viruses that are known to be genetically similar to viruses circulating in swine, these viruses are called “variant viruses” and denoted with a letter “v”. The table below reflects the most current case counts for variant virus infections reported in the United States since 2005. Most infections with variant viruses have occurred in children (persons 18 or younger) and most cases have reported direct or indirect exposure to swine prior to onset of illness. Limited transmission from close contact with an infected person has been observed in some investigations of human infections with variant viruses, but sustained human-to-human transmission has not been documented.
Table. Case Count: Detected U.S. Infections with
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| Reporting State | H3N2v | H1N1v | H1N2v | Total Detected Influenza Variant Virus infections |
|---|---|---|---|---|
| Arkansas | 2 | |||
| Colorado | 1 | |||
| Delaware | 1 | |||
| Hawaii | 1 | |||
| Illinois | 5 | 1 | ||
| Indiana | 154 | |||
| Iowa | 6 | 4 | 1 | |
| Kansas | 1 | |||
| Nebraska | 1 | |||
| Maine | 2 | |||
| Maryland | 51 | |||
| Michigan | 23 | 1 | ||
| Minnesota | 9 | 4 | 6 | |
| Missouri | 2 | |||
| New Jersey | 1 | |||
| North Dakota | 1 | |||
| Ohio | 131 | 3 | 2 | |
| Pennsylvania | 17 | |||
| South Dakota | 1 | |||
| Texas | 1 | 1 | ||
| Utah | 1 | |||
| West Virginia | 5 | |||
| Wisconsin | 22 | 2 | 1 | |
| Total | 431 | 20 | 11 | 465 |
For more detailed information about previously detected human cases of variant influenza infection, see Reports of Human Infections with Variant Viruses
Source URL: http://www.cdc.gov/flu/swineflu/variant-cases-us.htm
Source Agency: Centers for Disease Control and Prevention (CDC)
Captured Date: 2016-05-23 22:04:46.0
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