IDCU HomeInfectious Diseases A-CD-GH-LM-QR-ST-ZIDCU Health TopicsDisease ReportingRelated Rules & RegulationsImmunization BranchAbout IDCURelated DSHS SitesStaff Contact List
  • Contact Us

    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


2016 - 2017 Texas Influenza Surveillance Activity Report

Influenza logo

Home         FAQs        Reporting         Investigation         Immunization         Resources

The current extended Texas Influenza Surveillance Report is available in PDF format:Current Extended Flu Activity Report  pdf
Please note: The 2016-2017 influenza season began on October 2, 2016. 
For reports from the 2015-2016 season, please see 

2016–2017 Season/2017 MMWR Week 11

(March 12, 2017 – March 18, 2017)

Report produced on 03/24/2017


Influenza (flu) activity has slightly decreased the past few weeks in Texas; it appears to have peaked in mid-February. Compared to the previous week, the percentage of specimens testing positive for influenza reported by hospital laboratories and patient visits due to influenza-like illness (ILI) marginally decreased while the amount of specimens testing positive for influenza reported by public health laboratories slightly increased. Ten outbreaks due to influenza were reported. All but two of the outbreaks concluded in previous weeks. No influenza-associated pediatric deaths were reported.  In addition to flu, other respiratory viruses—especially rhino/enteroviruses—were detected in Texas during week 11.


Table 1: Summary of Texas Influenza (Flu) and Influenza-like Illness (ILI) Activity for the Current Week

Texas Surveillance Component Change from Previous Week Current Week Previous Week Page of Report
Statewide influenza activity level reported to CDC (geographic spread of influenza) No Change Regional Regional --
Statewide ILINet Activity Indicator assigned by CDC (intensity of influenza-like illness) Decreased Moderate High --
Percentage of specimens positive for influenza by hospital laboratories ▼4.75% 18.36% 23.11% 1
Percentage of specimens positive for influenza by public health laboratories ▲8.81% 70.91% 62.10% 2
Percentage of visits due to ILI (ILINet) ▼1.32% 6.27% 7.59% 4
Number of regions reporting increased flu/ILI activity No change 1 1 6
Number of regions reporting decreased flu/ILI activity ▲1 5 4 6
Number of variant/novel influenza infections No change 0 0 6
Number of ILI/influenza outbreaks ▲6 10 4 7
Number of pediatric influenza deaths No new cases reported 0 0 7

†Data displayed have been updated since last week’s flu report with any new reports received. 

Statewide Influenza Activity Map

Figure 5: Texas Map Displaying the Highest Level of Influenza or ILI Activity Reported by County for the Week Ending

March 18, 2017 (MMWR Week 11)



Please note: The majority of influenza cases are not reportable by law in Texas. This map contains data from sentinel sites and only displays influenza and ILI cases that were reported to public health. Positive laboratory results are reported according to specimen collection date, or date received in the laboratory if the former is unknown.

Note: The current extended Texas Influenza Surveillance Report in PDF format.

2016 - 2017 Texas Influenza Surveillance Activity Reports - Flu Reports in PDF format pdf
For the week ending:


02/18/1702/11/1702/04/1701/28/1701/21/1701/14/1701/07/17; 12/31/16;12/24/1612/17/16;

12/10/1612/03/16;11/26/1611/19/1611/12/16; 11/05/1610/29/16; 10/22/16; 10/15/1610/08/16

Last updated March 24, 2017