2007 - 2008 Texas Influenza Surveillance Information
Influenza Surveillance Report for MMWR Week 40
This is the first official report for the 2007-2008 influenza season. The flu activity level for the week ending October 6, 2007 is “no activity”. This does not mean that flu is not occurring in the state, but rather, at very low levels.
Reports were received from all 11 Health Service Regions (HSRs) for week 40. For a map of Health Service Regions, please visit the following website:
During week 40, the Air Force Institute for Operational Health (AFIOH) reported a total of 107 specimens tested for influenza virus; of these, 71 were negative and 36 are incomplete. Additionally, five hospital laboratories across Texas and the Texas Department of State Health Services Laboratory reported conducting 202 influenza tests (both antigen and culture) to the National Respiratory and Enteric Virus Surveillance System (NREVSS). Two antigen positive tests for influenza A (untyped) were reported. Care should be taken when relying on results of point-of-care rapid diagnostic test kits during times when influenza is not circulating widely. The sensitivity and specificity of these tests vary and the positive predictive value may be low outside the time of peak influenza activity. Positive results on rapid flu tests should be confirmed by viral culture if possible.
No institutional outbreaks or school closures were reported for week 40.
Sixty-four sentinel providers reported data to the U.S. Influenza Sentinel Provider Surveillance System on patients with influenza-like illness (ILI) and total patients seen for any reason during week 40. Thirty-nine (61%) of these providers reported at least one patient with ILI. Of all patient visits during this week, 3.93% were due to ILI.
|Percentage of Influenza-Like Illness (ILI) Reported by Sentinel Providers in Texas as of 10/12/07
||Age over 64
The current map showing flu activity levels in the United States may be found at: http://www.cdc.gov/flu/weekly/fluactivity.htm
For more information on flu surveillance activities in the State of Texas, please visit our main surveillance page.