Week 45, ending Nov 9, 2013
Statewide influenza-like illness activity has increased in recent weeks. Overall, influenza activity is increasing but is still low.
Influenza Testing Performed by Texas Laboratories for the Current Week:
Positive specimens by type/subtype [n (%)]
Influenza A: 33 (89.2%)
Subtyping performed: 22 (66.7%)
A (H1N1): 16 (72.7%)
A (H3N2): 6 (27.3%)
Subtyping not performed: 11(33.4%)
Influenza B: 4 (10.8%)
Since September 29, 2013, CDC has reported antigenic characterization results from two influenza A (H1N1) viruses received from the Texas Department of State Health Services (DSHS) Laboratory. The DSHS Laboratory sends a representative sample of influenza viruses to the CDC throughout the flu season.
Influenza A (H1N1) 
• Two viruses were related to A/California/07/2009. This virus strain was included in the 2013-2014 influenza vaccine for the Northern Hemisphere.
No antiviral resistance testing data for Texas specimens are available at this time.
Variant Influenza Viruses
No variant or novel influenza viruses have been detected in Texas in 2013.
Institutional Outbreaks and School Closures
No outbreaks or school closures were reported during week 45.
Influenza-Associated Pediatric Mortality
No influenza-associated pediatric deaths were reported during week 45. No influenza-associated pediatric deaths have been reported in Texas during the 2013-2014 influenza season.