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Novel Influenza A Viruses, H1N1v, H1N2v, H3N2v - October 5 2012 Update (US CDC): No New Cases
[Source: US Centers for Disease Control and Prevention (CDC), FluView, full page: (LINK). Edited.]
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Novel Influenza A Virus:
From July 12 through October 4, 2012, a total of 306 infections with influenza A (H3N2) variant (H3N2v) viruses have been reported from ten states.
No new cases been reported since last week?s update.
Cumulative totals by state since July 12 are:Sixteen H3N2v-associated hospitalizations and one H3N2v-associated death have been reported.
The vast majority of cases have occurred after prolonged swine exposure, though instances of likely human-to-human transmission have been identified.
At this time no ongoing human-to-human transmission has been identified.
As a result of enhanced surveillance activities for H3N2v, one infection with an influenza A (H1N1) variant (H1N1v) virus and three infections with influenza A (H1N2) variant (H1N2v) virus have been detected since July 2012, bringing the total number of variant influenza virus infections to 310.
Because of reporting schedules, state totals posted by CDC may not always be consistent with those reported by state health departments. If there is a discrepancy between state and CDC case counts, data from the state health department should be used as the most accurate number.
Early identification and investigation of human infections with novel influenza A viruses is critical in order to evaluate the extent of the outbreak and possible human-to-human transmission. Additional information on influenza in swine, variant influenza infection in humans, and strategies to interact safely with livestock can be found at http://www.cdc.gov/flu/swineflu/h3n2v-outbreak.htm.
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Novel Influenza A Virus:
From July 12 through October 4, 2012, a total of 306 infections with influenza A (H3N2) variant (H3N2v) viruses have been reported from ten states.
No new cases been reported since last week?s update.
Cumulative totals by state since July 12 are:
- Hawaii [1],
- Illinois [4],
- Indiana [138],
- Maryland [12],
- Michigan [6],
- Minnesota [4],
- Ohio [107],
- Pennsylvania [11],
- West Virginia [3], and
- Wisconsin [20].
The vast majority of cases have occurred after prolonged swine exposure, though instances of likely human-to-human transmission have been identified.
At this time no ongoing human-to-human transmission has been identified.
As a result of enhanced surveillance activities for H3N2v, one infection with an influenza A (H1N1) variant (H1N1v) virus and three infections with influenza A (H1N2) variant (H1N2v) virus have been detected since July 2012, bringing the total number of variant influenza virus infections to 310.
Because of reporting schedules, state totals posted by CDC may not always be consistent with those reported by state health departments. If there is a discrepancy between state and CDC case counts, data from the state health department should be used as the most accurate number.
Early identification and investigation of human infections with novel influenza A viruses is critical in order to evaluate the extent of the outbreak and possible human-to-human transmission. Additional information on influenza in swine, variant influenza infection in humans, and strategies to interact safely with livestock can be found at http://www.cdc.gov/flu/swineflu/h3n2v-outbreak.htm.
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