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Swine Novel Pandemic Influenza A (H1N1) in Texas …OR How I Spent My Summer Vacation

Swine Novel Pandemic Influenza A (H1N1) in Texas …OR How I Spent My Summer Vacation. Lesley Bullion Influenza Surveillance Coordinator Infectious Disease Control Unit. Not the Same Old Swine Flu. April 13-17: Two California novel swine influenza H1N1 cases identified

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Swine Novel Pandemic Influenza A (H1N1) in Texas …OR How I Spent My Summer Vacation

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  1. Swine Novel Pandemic Influenza A (H1N1) in Texas…OR How I Spent My Summer Vacation Lesley Bullion Influenza Surveillance Coordinator Infectious Disease Control Unit

  2. Not the Same Old Swine Flu • April 13-17: Two California novel swine influenza H1N1 cases identified • Both cases detected through seasonal flu surveillance • One of these patients and his brother traveled to Texas on April 3 • April 21: CDC notifies DSHS of 2 unsubtypeable flu A’s in HSR 8

  3. Novel Flu Surveillance Basics • Flu is suddenly notifiable • Participation in surveillance increases • Everyone wants to be tested • Guidance changes frequently • We don’t have time to report anything else • And…

  4. Flu Reports in the Summer?!

  5. Texas Novel Flu Surveillance • New • Increased culture/PCR surveillance • Individual case and contact investigations • Short form(s) • Long form(s) • Addenda • Weekly Regional and County Aggregate Reports • Airline investigations (DGMQ) • More thorough institutional outbreak investigations • Various studies • Routine • Culture/PCR Surveillance • NREVSS • ILINet • Reports from Regional Flu Surveillance Coordinators • Investigations of institutional outbreaks (e.g., schools)

  6. ILINet & Novel Flu • CDC: ‘ILINet was best system for detecting the novel flu’ • 11 additional Texas providers recruited/re-recruited • Weekly or daily reporting to CDC website or by fax • 13 daily reporters (Texas) • 143 total Texas ILINet providers as of 7/13/09 • Average of 54 reporters each week since week 21

  7. Specimens for Influenza Testing Submitted to DSHS Austin Lab Since 4/16/09 (N=9,401*)

  8. Influenza-Associated Pediatric Mortality – Novel Flu • 2 deaths “out of season” • Ages 12 and 13 years • Both novel flu A H1N1 • Only one with significant underlying medical conditions • Total of 13 pediatric flu deaths for 08-09 to date

  9. Where are we now? • Investigations of severe illnesses (ICU) and deaths • County and Regional Aggregate reports • Reported to CDC via web • Returning to “regular” surveillance • Weekly flu reports • ILINet • NREVSS • PCR/culture surveillance - limited • Workgroups: Flu-related topics under discussion • Lots of questions to answer for fall

  10. Putting it in Perspective *Based on CDC estimates of national annual flu burden

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