Maine Weekly Influenza Surveillance Report, November 1, 2011 - For MMWR week 43 (ending 10/29/11) (Dept of Health): 1 New trH3N2 case

[Giuseppe]

[Source: Department of Health, Maine, USA, full PDF document: (LINK). Extract, edited.]


Maine Weekly Influenza Surveillance Report, November 1, 2011 - For MMWR week 43 (ending 10/29/11)

• New This Week
  • Federal Flu Code: Sporadic
  • Second case of swine origin influenza confirmed
  • Surveillance Information ? Maine, 2011-2012 Influenza Season
    • Number of ILINet Providers reporting: 18
      • % of visits for Influenza-Like Illness (ILI): 0.90
    • Number of Emergency Departments participating: 24
      • % of visits for ILI: 1.01
      • % of visits for fever: 2.11
    • Number of Hospitals reporting: 2
      • % of admissions due to Pneumonia &Influenza (P&I): 4.0
    • Number of Vital Records Offices Reporting: 1
      • % of deaths due to P&I: 7.1

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Lab Data ? Maine, 2011-2012 Influenza Season

• # of samples tested at HETL: 8
  • # positive: 1
  • % positive: 12.5
• # of samples positive at Maine Reference Labs: 0
• # of samples positive at National Reference Labs: 0
• # of samples positive by rapid antigen test: 0

Novel Influenza A Virus

• Maine confirmed a second case of swine origin novel influenza A virus. The first case was confirmed on October 17th, and the second case was confirmed October 31st. Both cases had multiple exposures to pigs. These cases are the 5th and 6th recognized cases of human infection with S-OtrH3N2 with the M segment gene from the pH1N1virus. More information can be found in a Health Alert, released 10/19/2011 accessible through: (LINK).

Antiviral Resistance ? Maine, 2011-12 Influenza Season

• # of Influenza A (pH1N1) samples tested for Tamiflu resistance at HETL: 0
• # with resistance: 0

Antigenic Characterization (Vaccine Match)

• Federal CDC has antigenically characterized four influenza viruses since October 1, 2011. All four matched the H3N2 component of the 2011-12 influenza vaccine.

Influenza-Like Illness Outbreaks ? Maine, 2011-12 Influenza Season

• No outbreaks reported

Pediatric Influenza Deaths

• No pediatric influenza-associated deaths reported during the 2011-12 influenza season

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