West Virginia reports Influenza activity for week ending Saturday, March 17, 2012

Influenza Partner,

West Virginia reports the following for week ending Saturday, March 17, 2012 (MMWR week 12):

• Influenza activity: LOCAL


• Number of influenza-like illnesses (ILI) reported: 1432 CASES

• 23 sentinel providers reported 1.5% of visits were due to ILI

• Active influenza outbreaks: An outbreak of influenza A (rapid test positive but not PCR confirmed) in an elementary school

• Influenza testing (includes PCR, Immunofluorescence or Viral Culture):

o Hospital and Referral Laboratories: reports 17 positive tests for Influenza A, and 2 positive test for Influenza B

o WV Office of Laboratory Services (WV OLS): 13 positive tests for Influenza A

o Note: During low influenza activity, the negative predictive value of a rapid influenza test is high. A negative rapid influenza test may need to be confirmed by culture or PCR among patients with ILI, especially those with severe illness or in an outbreak setting.

• Influenza data will be updated as new information becomes available. For the latest influenza surveillance information, visit: http://www.dhhr.wv.gov/oeps/disease/flu/Pages/fluSurveillance.aspx

• Antiviral Agents for the Treatment and Chemoprophylaxis of Influenza Recommendations of the Advisory Committee on Immunization Practices (ACIP) is found at: http://www.cdc.gov/mmwr/pdf/rr/rr6001.pdf


• Sentinel providers reporting to CDC: submit ILI numbers to CDC before noon on Tuesdays.


• Influenza partners not reporting to CDC: submit ILI numbers to your local health department before close of business on Mondays.


During influenza season, surveillance information will be sent weekly. For questions regarding this report, please contact the Division of Infectious Disease Epidemiology.



Sherif Ibrahim, MD, MPH

Regional Epidemiologist Liaison/Outbreak Epidemiologist

Division of Infectious Disease Epidemiology



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