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niman

2016 H3N2v Cases In Michigan and Ohio Increase To 18

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Seven human infections with novel influenza A viruses were reported by two states (Michigan [4] and Ohio [3]) during week 33. All seven persons were infected with influenza A (H3N2) variant (H3N2v) viruses and reported exposure to swine in fair settings during the week preceding illness onset. 

http://www.cdc.gov/flu/weekly/

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Novel Influenza A Viruses:

Seven human infections with novel influenza A viruses were reported by two states (Michigan [4] and Ohio [3]) during week 33. All seven persons were infected with influenza A (H3N2) variant (H3N2v) viruses and reported exposure to swine in fair settings during the week preceding illness onset. To date, a total of 18 (Michigan [12] and Ohio [6]) human infections with H3N2v viruses have been identified during 2016, all reported during the month of August. One of the 18 persons were hospitalized as a result of H3N2v illness. No deaths have occurred. All variant virus infections have been associated with swine exposure in fair settings. No human-to-human transmission has been identified. Public health and agriculture officials are investigating the extent of disease among humans and swine, and additional cases may be identified as the investigation continues.

Early identification and investigation of human infections with novel influenza A viruses are critical to ensure timely risk assessment and so that appropriate public health measures can be taken. Additional information on influenza in swine, variant influenza infection in humans, and strategies to interact safely with swine can be found athttp://www.cdc.gov/flu/swineflu/index.htm.

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edit
 
 
 
PB2
 
PB1
 
PA
 
HA
 
NP
 
NA
 
MP
 
NS
 
HE
 
P3
 
edit Name Isolate ID Subtype Passage PB2 PB1 PA HA NP NA MP NS HE P3 Collection date
pencil_noedit.png
A/Michigan/84/2016
EPI_ISL_232047
H3N2
OR
---
---
---
1701
---
1358
---
---
---
---
2016-08-11
pencil_noedit.png
A/Michigan/83/2016
EPI_ISL_232048
H3N2
OR
2316
2286
2208
1737
1540
1441
1002
865
---
---
2016-08-09
pencil_noedit.png
A/Michigan/82/2016
EPI_ISL_232046
H3N2
OR
2264
2274
1094
956
---
1360
970
664
---
---
2016-08-09
pencil_noedit.png
A/Ohio/28/2016
EPI_ISL_232045
H3N2
OR
2264
2274
---
1701
---
1342
969
838
---
---
2016-08-04
pencil_noedit.png
A/Ohio/27/2016
EPI_ISL_232044
H3N2
OR
2264
2274
2151
1693
1497
1363
982
838
---
---
2016-07-30

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Case Count: Detected U.S. Human Infections with H3N2v by State since August 2011

Table 1. Case Count: Detected U.S. Human Infections with H3N2v by State since August 2011

States Reporting H3N2v Cases Cases in
2011
Cases in
2012
Cases in
2013
Cases in
2014
Cases in
2015
Cases in
2016

Hawaii

  1        

Illinois

  4 1      

Indiana

2 138 14      

Iowa

3 1 1      

Maine

2          

Maryland

  12        

Michigan

  6 2   1 12

Minnesota

  5     1  

New Jersey

        1  

Ohio

  107 1 2   6

Pennsylvania

3 11        

Utah

  1*        

West Virginia

2 3        

Wisconsin

  20   1    

Total

12 309 19 3 3 18

* Case in Utah occurred in April 2012.

This chart indicates the number of CDC-reported infections with H3N2v influenza A viruses since August 2011. This case count will be updated on Fridays as new cases are reported.

NOTE: The state totals reported by CDC may not always be consistent with those reported by state health departments. If there is a discrepancy between these two counts, data from the state health departments should be used as the most accurate number.

Table 2. H3N2v Hospitalizations and Deaths Since July 2012*

H3N2v Hospitalizations and Deaths Since July 2012 Cases in
2012
Cases in
2013
Cases in
2014
Cases in
2015
Cases in
2016

Hospitalizations

16 1 1 2 1

Deaths

1 0 0 0 0

* As reported by states to CDC. This chart indicates the number of CDC-reported infections with H3N2v influenza A viruses since July 2012. This case count will be updated when new cases are reported.

See Reported Infections with Variant Influenza Viruses in the United States since 2005 for a complete list of human infections with all variant viruses since 2005.

http://www.cdc.gov/flu/swineflu/h3n2v-case-count.htm

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Novel Influenza A Viruses:

No additional human infections with novel influenza A viruses were reported to CDC during week 34. To date, a total of 18 (Michigan [12] and Ohio [6]) human infections with H3N2v viruses have been identified during 2016, all reported during the month of August. One of the 18 persons were hospitalized as a result of H3N2v illness. No deaths have occurred. All variant virus infections have been associated with swine exposure in fair settings and no human-to-human transmission has been identified.

Early identification and investigation of human infections with novel influenza A viruses are critical to ensure timely risk assessment and so that appropriate public health measures can be taken. Additional information on influenza in swine, variant influenza infection in humans, and strategies to interact safely with swine can be found athttp://www.cdc.gov/flu/swineflu/index.htm.

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