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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


week 6




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Influenza Influenza
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
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2004 - 2005 Texas Influenza Surveillance Information

The weekly flu activity level for CDC week 6 ending 2/5/05 remains widespread.

Reports were received for all 11 regions.

Seven of the eleven regions report increased flu activity this week, with the regions representing East Texas (HSR 4/5N) and the Dallas/Fort Worth area (HSR 3) reporting about the same (high) level of activity as last week. The region representing South Texas (HSR 11) was unable to discern a trend from the data available at the time.

(A map of Health Service Regions)

Data from the Sentinel Provider Surveillance Network (SPSN) indicate an increase in the level of Influenza-like illness (ILI) activity over last week, with levels almost six times the baseline level.

Schools around the state have continued to report increased absences due to ILI, and a few schools in North and East Texas have chosen to close their schools for a day or two during peak absence levels.

Culture confirmed flu has been identified in all regions of the state, with high specimen levels again this week.

Counties with culture confirmed flu include Dallas, Tarrant, Harris, Bexar, Wichita, Bell, Travis, El Paso, Potter, Wichita, and Lubbock.

The majority of culture confirmed flu remains A. Flu B activity seems to be centered in central Texas near the I-35 corridor between Waco and San Antonio.

A new strain of flu has been identified in California (dubbed A/California). This strain, while still H3N2, is different enough that the vaccine may not provide protection against it. However, there have been no reports of this strain in our state.

There remains a good match between circulating flu strains and vaccine strains in Texas.

Influenza Surveillance Map
Influenza-Like Illness Activity Graph


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