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    Infectious Disease Control Unit
    Mail Code: 1960
    PO BOX 149347 - Austin, TX 78714-9347
    1100 West 49th Street, Suite T801
    Austin, TX 78714

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


    E-mail

week 51

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Surveillance

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Influenza Influenza
(Flu)
ICD-9 487; ICD-10 J10,11
Related Topics: Protecting Yourself During the Cold and Flu Season, Avian Flu, Vaccine Preventable Diseases, Asthma and SARS

2006 - 2007 Texas Influenza Surveillance Information

Influenza Surveillance Report for MMWR Week 51

The flu activity level for the week ending December 23, 2006 is “regional”. Regional activity indicates that 2 or more but less than half of the regions are experiencing an increase in ILI and lab-confirmed (by culture) flu has been identified in those regions.

Flu reporting for week 51 was limited due to the holidays.

The DSHS laboratory isolated influenza A (all H1) in specimens collected during week 51 from Bexar, Dallas, Galveston, and Tarrant Counties. Influenza B (all Malaysia/2506/2004-like) was isolated in specimens from Bexar and Starr Counties. Scott and White reported isolating flu A in residents of Bell County and Brazos County and flu B in residents of McLennan County and Hill County. HSR 1 reported culture confirmed flu B from Randall County. The Air Force Institute for Operational Health (AFIOH) reported no culture confirmed flu during week 51.

Reports were received from HSRs 1, 2/3, 4/5N, 7, 8, 9/10, and 11 for week 51. All HSRs reported limited flu activity; however none of the regions reported an increase in flu activity from the previous week. For a map of Health Service Regions, please visit the following website:



http://www.dshs.state.tx.us/regions/state.shtm

 

No institutional outbreaks or school closures were reported for week 51.

Chart

Sixty-four sentinel providers reported influenza-like illness (ILI) for week 51. Of all patient visits during this week, 5.02% were due to ILI. The baseline for Texas is 3.71%. The baseline is the mean percentage of patient visits for ILI during non-influenza weeks for the previous three seasons plus two standard deviations.


Percentage of Influenza-Like Illness (ILI) Reported by Sentinel Providers in Texas
as of 01/12/07
Week # Reporting Age 0-4 Age 5-24 Age 25-64 Age over 64 Total ILI Total Patients % ILI
2006-40 60 71 120 65 9 265 15228 1.74
2006-41 58 104 126 93 14 337 16202 2.07
2006-42 76 250 187 154 44 635 24995 2.54
2006-43 76 219 188 153 20 580 23063 2.51
2006-44 71 235 254 164 39 692 22374 3.09
2006-45 70 356 249 182 42 829 22458 3.69
2006-46 70 495 312 228 62 1097 23837 4.60
2006-47 75 450 277 236 95 1008 19782 5.09
2006-48 77 442 275 301 70 1088 24189 4.49
2006-49 83 374 325 283 96 1078 24010 4.48
2006-50 71 387 380 252 80 1099 21973 5.00
2006-51 64 349 256 177 50 832 16562 5.02


Percentage of Visits Due to Influenza-Like Illness,
Texas Sentinel Providers Surveillance Network,
2006-2007 Season

Chart



Statewide Influenza Activity For the Week Ending December 23, 2006

(MMWR Week 51)
Influenza in Texas Map

Map Legend 1                Map Legend 2

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


 

Texas Department of State Health Services - Infectious Disease Control Unit
1100 West 49th Street, Suite T801, Mail Code: 1960 PO BOX 149347 - Austin, TX 78714-9347
(512) 458-7676 - Fax: (512) 458-7616 - E-Mail

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Last updated May 19, 2010