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    Infectious Disease Prevention Section
    Mail Code: 1927
    PO BOX 149347 - Austin, TX 78714-9347
    1100 West 49th Street, Suite G401
    Austin, TX 78714

    Phone: (512) 776-7676
    Fax: (512) 776-7616


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Week 3

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2005-2006 Texas Influenza Surveillance Information

2005-2006 Season Summary

The flu activity level for the week ending January 21, 2006 is widespread. Flu activity has been reported in all regions of the state for the fourth consecutive week.

Reports were received for all 11 Health Service Regions (HSRs) for week 3. An increase in flu activity was reported in HSRs 1, 2, 3, 4/5N. Activity has remained about the same in HSRs 6/5S, 7, 8, and 9/10. Only HSR 11 reported a decrease in activity. For a map of Health Service Regions, please visit the following website:

Texas Health Service Regions Map

During week 3, culture confirmed influenza A was identified in Bell, Bexar, Brazos, Burleson, Castro, Childress, Crosby, Dallas, Falls, Garza, Grimes, Hansford, Harris, Hemphill, Hutchison, Lamb, Lubbock, McLennan, San Patricio, Smith, Tom Green, Travis, and Wichita Counties. The majority of flu cultured by the DSHS lab continues to be A/H3N2. The Centers for Disease Control and Prevention (CDC) have further characterized the influenza isolates submitted by DSHS as A/California/07/2004-like, which is one of the A components of the current vaccine.

A different strain of influenza B has been identified in Dallas County. Influenza B/Hong Kong has been isolated at the DSHS lab. This strain is a member of the B/Victoria/2/87 lineage. The previous week, the DSHS lab identified B/Shanghai/361/2002-like (a member of the B/Yamagata/16/88 lineage). Dallas County continues to be the only area of the state with culture confirmed flu B. Providers are encouraged to send any influenza B positive specimens to the DSHS lab for further analysis. For information on submitting a specimen, please call your Health Service Region or the Infectious Disease Control Unit (IDCU) in Austin at: (512) 458-7676.

School districts in Archer and Baylor Counties have reported closing due to influenza. Collin and Dawson Counties have reported school outbreaks but have not closed. No other institutional outbreaks have been reported.

For more information on flu surveillance activities in the State of Texas, please visit the following website:

http://www.dshs.state.tx.us/IDCU/disease/influenza/surveillance/Surveillance.aspx

Data from the Sentinel Provider Surveillance Network (SPSN) indicates a slight decrease in influenza-like illness (ILI) from the previous week.

PERCENTAGE OF VISITS FOR INFLUENZA-LIKE-ILLNESS REPORTED BY SENTINEL PROVIDERS IN TEXAS
Week # Reporting Age 0-4 Age 5-24 Age 25-64 Age over 64 Total ILI Total Patients % ILI
2005-45 33 68 124 93 13 298 11436 2.60
2005-46 37 102 142 117 18 379 13824 2.74
2005-47 35 95 119 93 6 313 10897 2.87
2005-48 43 144 163 128 9 444 15657 2.83
2005-49 39 118 181 116 3 418 12894 3.24
2005-50 45 160 268 190 13 631 14410 4.37
2005-51 44 146 149 61 7 363 7797 4.65
2005-52 39 219 232 363 29 843 10140 8.31
2006-01 39 177 198 294 42 711 11301 6.29
2006-02 51 200 343 252 33 828 13910 5.95
2006-03 41 246 410 266 26 948 11782 8.04


Percentage of Physician Visits Due to Influenza-Like Illness, Texas Sentinel Providers Surveillance Network 2005-2006 Season
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Statewide Influenza Activity For the Week Ending January 21, 2006 (MMWR Week 3)

Statewide Influenza Activity

*Influenza activity level corresponds to current MMWR week only and does not reflect previous weeks’ activity.

2005-2006 Texas Influenza Surveillance Information - Flu Reports

For the week ending:
10/15/05, 10/22/05, 10/29/05, 11/05/05, 11/12/05, 11/19/05, 11/26/05, 12/10/05, 12/17/05, 12/24/05, 01/07/06, 01/14/06, 01/28/06, 02/04/06, 02/11/06, 02/18/06, 02/25/06, 03/04/06, 03/11/06, 03/18/06, 03/26/06, 04/01/06, 04/08/06, 04/15/06, 04/22/06, 04/29/06, 05/12/06, 05/19/06, 05/20/06

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Last updated April 22, 2021