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Influenza Surveillance Report for MMWR Week 11

The flu activity level for the week ending March 17, 2007 is widespread. This is the seventh consecutive week of the season that widespread activity has been reported. Widespread activity indicates that at least half of the regions are experiencing an increase in ILI and lab-confirmed (by culture) flu has been identified in those regions.

Overall, flu activity continues to decrease across the state.

A total of 10 pediatric influenza-associated fatalities have been confirmed by DSHS since January 1, 2007. Additional details will be available on the 2006-2007 season summary.

The DSHS laboratory isolated influenza in specimens collected during week 10 from the following counties:

In addition, Scott and White Laboratory reported culture confirmed influenza A from Bell, Falls, and McLennan Counties and culture confirmed influenza B from Bell, Falls, and McLennan Counties. The Air Force Institute for Operational Health (AFIOH) laboratory reported culture confirmed flu A and B from Sheppard AFB (Wichita County) during week 11.

No school closures or institutional outbreaks were reported during week 1.

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Fifty-six sentinel providers reported influenza-like illness (ILI) for week 11. Of all patient visits during this week, 5.84% were due to ILI. The baseline for Texas is 3.71%. The baseline is the mean percentage of patient visits for ILI during non-influenza weeks for the previous three seasons plus two standard deviations.

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2006 - 2007 Texas Influenza Surveillance Information --- Flu Reports

For the week ending: 10/7/06; 10/14/06; 10/21/06; 10/28/06; 11/04/06; 11/11/06; 11/18/06; 12/02/06; 12/09/06; 12/16/06; 12/23/06; 12/30/06; 1/06/07; 1/13/07; 1/20/07; 1/27/07; 2/10/07; 2/17/07; 2/24/07; 3/03/07; 3/10/07; 3/17/07; 3/24/07; 3/31/07; 4/07/07; 4/14/07; 5/05/07

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