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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


2017 - 2018 Texas Influenza Surveillance Activity Report


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The current extended Texas Influenza Surveillance Report is available in PDF format:

Current Extended Flu Activity Report (PDF)
Please note: The 2017-2018 influenza season began on October 1, 2017. 
For reports from the 2016-2017 season, please see 

2017-2018 Season/2018 MMWR Week 06

(February 4, 2018 – February 10, 2018)

Report produced on 02/16/2018


Influenza activity remains high across the state of Texas although activity has slightly decreased over the past few weeks. Compared to the previous week, the percentage of patient visits due to influenza-like illness (ILI) and the percentage of specimens testing positive for influenza reported by public health and hospital laboratories has marginally decreased. One influenza-associated pediatric death was reported. Fourteen ILI or influenza-associated outbreaks were reported. In addition to flu, other respiratory viruses—especially rhinovirus/enterovirus—were detected in Texas during week 06. It is too early to tell if influenza activity has peaked for the season in Texas.

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 Widespread Widespread --
Statewide ILINet Activity Indicator assigned by CDC (intensity of influenza-like illness) No change High High --
Percentage of specimens positive for influenza by hospital laboratories ▼1.76% 30.00% 31.76% 1
Percentage of specimens positive for influenza by public health laboratories ▼0.97% 64.13% 65.10% 2
Percentage of visits due to ILI (ILINet) ▼1.08% 12.81% 13.89% 4
Number of regions reporting increased flu/ILI activity ▼3 2 5 6
Number of regions reporting decreased flu/ILI activity ▲4 4 0 6
Number of variant/novel influenza infections No cases reported 0 0 6
Number of ILI/influenza outbreaks ▼11 14 25 6
Number of pediatric influenza deaths No new cases reported 1   0 7

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

Texas Map Displaying the Highest Level of Influenza or ILI Activity

Reported by County for week ending February 10, 2018 (MMWR Week 06)

Statewide Influenza Activity Map:

Week 6 Flu


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.

2017-2018 Texas Influenza Surveillance Activity Reports:

02/16/201802/09/2018, 02/02/2018, 01/27/2018, 01/20/2018, 01/12/2018, 01/05/2018,

12/29/201712/22/1712/15/2017, 12/08/2017, 12/01/2017, 11/29/2017, 11/17/2017,

11/10/201711/03/2017, 10/26/201710/20/2017, 10/12/2017

Last updated February 16, 2018