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    Infectious Disease Prevention Section
    Mail Code: 1927
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2019-2020 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) 
(July 26, 2020 - August 1, 2020)
Report produced on 8/7/2020.

2019-2020 Season/2020 MMWR Week 31

Please note: The 2019-2020 influenza season began on September 29, 2019. 
Reports from the 2018-19 season.


*Please note, some aspects of influenza surveillance may be affected by current COVID-19 response activities. For information about COVID-19 in Texas, please visit

Compared to the previous week, the percentage of specimens testing positive for influenza reported by hospital laboratories has increased. The percentage of patient visits due to influenza-like illness (ILI) has decreased. No influenza-associated pediatric deaths were reported. No influenza-associated institutional outbreaks or school closures were reported.

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

Texas Influenza and Influenza-like Illness 
Surveillance Component
Previous Week Change Current Week   Previous Week  Report Page
Statewide influenza activity level reported
to CDC (geographic spread of influenza)
Not determined during the summer
N/A N/A 
Statewide ILINet Activity Indicator assigned
by CDC (intensity of influenza-like illness)
Not determined during the summer N/A
Percentage of specimens positive for
influenza by hospital laboratories
▲0.42%  1.69% 1.27% 1
Percentage of visits due to ILI (ILINet)▼0.31%
1.27% 1.58% 3
Number of regions reporting increased
flu/ILI activity
1 0 5
Number of regions reporting decreased
flu/ILI activity
0 1 5
Number of variant/novel influenza
No cases reported 0 0 5
Number of ILI/influenza outbreaksNo change
0 0 5
Number of pediatric influenza deathsNo change
0 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 the Week ending 
August 1, 2020 (MMWR Week 31)

Statewide Influenza Activity Map:
Flu Week 31

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 is in PDF format.

2019-2020 Texas Influenza Surveillance Activity Reports:

08/07/2007/31/2007/24/20, 07/17/2007/10/2007/02/2006/26/2006/18/2006/12/20
06/05/20, 05/29/2005/22/20, 05/15/20, 05/08/2005/01/20, 04/24/20, 04/17/20, 04/10/20, 04/03/20, 03/27/20, 03/20/20, 03/11/20, 03/06/20, 02/28/20, 02/21/20, 02/14/20, 02/07/20, 01/31/20, 01/24/20, 01/17/20, 01/10/20, 01/03/20, 12/30/19, 12/20/19, 12/13/19, 12/06/19, 12/02/19, 11/22/19, 11/15/19, 11/08/19, 11/01/19, 10/25/19, 10/18/19, 10/11/19

Reports from the 2018-2019 season.

Last updated August 7, 2020