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Influenza and Respiratory Virus Activity Summary
Updated Weekly

Report for Week Ending
May 31, 2008

Oklahoma Influenza Activity Level

No Activity

The Influenza Activity Level as measured by sentinel physician reporting and laboratory testing in Oklahoma will remain at no activity for the week ending May 31, 2008. There was no laboratory confirmation of influenza by direct fluorescent antibody (DFA) or culture testing. The proportion of patients evaluated by sentinel physicians meeting symptom criteria for influenza-like illness remained below 1% (0.2%, 3/1645) for this reporting period.1 None of the eight regions reported a proportion of patients presenting with influenza-like illness over 1% this week. The percent of positive tests for influenza reported from sentinel laboratories stayed at 0% (0/37) for the third consecutive week. This will be the last weekly web report for the 2007-2008 season. Weekly web updates will resume October 2008 when the 2008-2009 influenza and viral respiratory illness season begins.

1 Influenza-like illness is defined as having a fever (>100oF) and a cough and/or a sore throat. The temperature may be measured in the doctor’s office or at home

Influenza and Respiratory Virus Sentinel Laboratory Data *
Oklahoma 2007-2008

Positive Tests May 4 - May 10 May 11 - May 17 May 18 - May 24 May 25 - May 31
Influenza A 0 0 0 0
Influenza B 1 0 0 0
RSV 4 3 2 2
Adeno-Para 2 1 4 5

*Laboratory testing methods include viral culture, rapid antigen, and DFA.
**Oklahoma State Health Department Public Health Laboratory viral culture testing.

***Sentinel Laboratory viral culture testing

Influenza Activity Levels, Oklahoma 2007-2008 

Week Level Week Level Week Level  Week Level
 Oct 6  No Activity   Dec 15  Sporadic  Feb 23  Widespread May 3  No Activity
 Oct 13  No Activity  Dec 22 Sporadic   Mar 1  Widespread  May 10  Sporadic
 Oct 20  No Activity  Dec 29  Sporadic  Mar 8 Regional   May 17 No Activity 
Oct 27   No Activity Jan 5  Sporadic   Mar 15 Regional   May 24  No Activity
Nov 3   Sporadic Jan 12  Sporadic  Mar 22  Regional May 31  No Activity 
Nov 10   Sporadic Jan 19  Local   Mar 29 Local     
 Nov 17  Sporadic Jan 26  Regional   Apr 5 Sporadic     
 Nov 24  Sporadic Feb 2  Widespread   Apr 12  Sporadic     
Dec 1   Sporadic Feb 9  Widespread   Apr 19  Sporadic     
Dec 8  Sporadic  Feb 16 Widespread  Apr 26  No Activity     



Additional Weekly Surveillance
Influenza and Respiratory Virus Summary Report
Influenza and Respiratory Virus Testing Table
Influenza Viral Testing Graph
Percent Influenza-like Illness Graph
Percent RSV Positive Testing Graph
Percent Influenza-like Illness Graph 2005-2008
Percent RSV Positive Testing Graph 2005-2008
Oklahoma Flu Activity Table
Flu and Respiratory Virus Monitoring System - How Does Oklahoma Track Activity?
CDC Flu Activity Level Criteria
National Seasonal Influenza Information
United States Influenza Activity Map

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