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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 48

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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

2007 - 2008 Texas Influenza Surveillance Information

Influenza Surveillance Report for MMWR Week 48

The influenza (flu) activity level for Texas for the week ending December 1, 2007 is “local.” Local activity indicates that a single region of the state is experiencing an increase in ILI and has recent laboratory–confirmed influenza.

Reports were received from all 11 Health Service Regions (HSRs) for week 48. HSRs 7, 8, and 11 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

During week 48, four hospital laboratories and two public health laboratories throughout Texas reported conducting a total of 520 influenza tests (antigen, culture, and PCR) to the National Respiratory and Enteric Virus Surveillance System (NREVSSnew window ) sponsored by the Centers for Disease Control and Prevention (CDC). Sixteen antigen detection tests from Bell and Bexar counties were positive for influenza A (untyped), and two viral cultures were positive for influenza A (H1N1). In all, seven reports of culture-confirmed influenza were received from NREVSS and other sources: influenza A (H1N1) from Bell County, four influenza A (untyped) isolates from Harris County, influenza A (H1N1) from El Paso County, and influenza A (H3N2) from Nueces County. The Air Force Institute for Operational Health (AFIOH) did not report any positive cultures for influenza virus from Texas bases. Additional positive results from point–of–care rapid flu tests were reported by providers throughout the state.

The first influenza–associated pediatric death in Texas and in the United States for the 2007–2008 flu season was reported in week 48. The child was a 9–year–old resident of Bexar County with significant underlying medical conditions. The child had been vaccinated for the current flu season. The death occurred in MMWR week 45 (week ending November 10, 2007) after a brief illness.

No institutional outbreaks or school closures were reported for week 48.

Sixty–six sentinel providers reported data to the U.S. Influenza Sentinel Provider Surveillance System (SPSN) on patients with influenza-like illness (ILI) and total patients seen for any reason during week 48. Sixty-five providers reported seeing patients during week 48; of those, 38 (58%) providers reported seeing at least one patient with ILI. Of all patient visits during this week, 4.99% were due to ILI. The ILI baseline for the West South Central Region (Arkansas, Louisiana, Oklahoma, and Texas) of the United States is 4.3% for the 2007–2008 season. 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 12/10/2007 9:39:14 AM
Week # Reporting Age 0-4 Age 5-24 Age 25-64 Age over 64 Total ILI Total Patients % ILI
2007-40 83 239 150 147 48 584 20610 2.83
2007-41 88 264 255 207 58 784 25255 3.10
2007-42 86 274 270 261 50 855 25776 3.31
2007-43 85 368 290 208 47 913 26428 3.45
2007-44 94 391 274 204 55 924 27993 3.30
2007-45 86 409 314 241 39 1003 25514 3.93
2007-46 78 420 299 215 65 999 24275 4.11
2007-47 87 469 300 269 73 1111 22097 5.02
2007-48 66 450 250 284 71 1055 21144 4.99





 

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