Laboratory Influenza Page

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For this Influenza Season, the Michigan Department of Health and Human Services (MDHHS) Bureau of Laboratories will be performing testing for all flu strains which include 2009 A H1, seasonal flu A types and Flu B. In addition, MDHHS continues to highly encourage confirmatory influenza testing for cases of public health interest (ICU hospitalizations, severely ill pregnant women, patients with unusual and severe presentations, deaths) and for congregate setting outbreak/cluster investigations.  MDHHS is reminding laboratories to please submit all rapid positive flu for confirmation.

Please note the approved specimen types for Flu PCR analysis have been expanded to include all of the following:

  • Upper respiratory tract specimens such as nasopharyngeal swabs (NP), nasal swabs (NS), throat swabs (TS), dual NP/TS swabs, nasal washes (NW), and nasal aspirates (NA)
  • Lower respiratory tract specimens such as bronchoalveolar lavage (BAL), bronchial washes (BW), tracheal aspirates (TA), sputum, lung tissue, and viral culture
For the most current updates, see the latest  MIFluFocus report   For the latest information on the current influenza season, see the MDHHS Influenza Page . 

 2015-2016 Influenza Season Report  

MDHHS Laboratory Data  

The data shown here are the results obtained by the MDHHS Virology Laboratory from specimens for targeted public health testing plus surveillance testing through the Michigan Sentinel Physician and Sentinel Laboratory Programs.  The Sentinel Physician Program consists of medical provider sites from a variety of geographic locations throughout Michigan enrolled in the sentinel surveillance program. These providers represent private practice for adult and pediatric patients, as well as urgent and emergency care facilities, nursing homes and university health services. Michigan is now conducting routine influenza surveillance year round.  Thus, MDHHS requests submission of two to three specimens for influenza A and B viral culture four times during the year: early influenza season, when influenza virus is beginning to circulate; middle season, during the peak of influenza activity; late season, as influenza activity diminishes; and in the summer months. Participation in this program is voluntary.  

The influenza season runs from October through the end of September each year. 

Time   Inf B  2009 A, H1 Seasonal A, H3   A, Unsubtypable LAIV
Aug 21 - 27 0 0 2 0 0
Aug 14 - 20 0 1 94 1 0
Aug 7 - 13 0 0 25 0 0
July 31 - Aug 6 0 0 14 0 0
July 2016 0 0 1 0 0
June 2016 2 1 1 0 0
May 2016 6 9 7 0 0
April 2016 11 19 3 0 0
March 2016 253 105 163 2 0
February 2016 62 691,2 5 1 21,2
January 2016 3 37 4 1 0
December 2015 2 26 4 1 0
November 2015 0 5 4 0 0
October 2015 0 3 7 0 0

1 LAIV / Influenza A H1N1 detected

Influenza A H1N1 / Influenza B / LAIV detected

3 One specimen was positive for both InfluA H3 and Influ B

4 Influenza A H3N2v detected

5 One specimen was postive for Influenza A H3N2v


   2015-2016 Guidance Documents

2015-2016 Influenza Test Algorithm - updated 10/06/2015
2015-2016 Influenza Test Algorithm for Sentinel Physicians and Sentinel Laboratories - updated 10/06/2015
2015-2016 Antiviral Resistance Information -  updated 10/06/2015

2015-2016 Influenza Guidance for Laboratories - updated 10/06/2015
2015-2016 Influenza-Related Pediatric Mortality Investigation and Reporting - updated 10/06/2015


   2015-2016 Northern Hemisphere Seasonal Influenza Vaccine Components

          A/California/7/2009 (H1N1)pdm09-like virus
          A/Switzerland/9715293/2013 (H3N2)-like virus
          B/Phuket/3073/2013-like virus
          Quadrivalent vaccines will also contain: B/Brisbane/60/2008-like virus

    Antiviral Resistance Testing

2015-2016 Antiviral Resistance Information -  updated 10/06/2015


   Test Request Form

         MDHHS Test Request Form - 4/27/2009 

         Quick Guide for Filling Out the MDHHS Test Request Form - updated 10/23/2013 

   Specimen Collection and Shipping

Approved specimen types for influenza testing at the MDHHS BOL: 

  • Upper respiratory tract specimens such as nasopharyngeal swabs (NP), nasal swabs (NS), throat swabs (TS), dual NP/TS swabs, nasal washes (NW), and nasal aspirates (NA)
  • Lower respiratory tract specimens such as bronchoalveolar lavage (BAL), bronchial washes (BW), tracheal aspirates (TA), sputum (PCR only), lung tissue, and viral culture 

Quick Guide for Packaging and Shipping Influenza Specimens to BOL - updated 9/15/2009 

Quick Guide for Making Influenza Specimen Collection Kits - updated 8/26/2009 

MDHHS BOL Flu Collection Guide  - updated 10/17/2013

Biological Substance, Category B Shipping Label - DCH-0800   - updated 12/21/2009 

  CDC Influenza Advisories

 Influenza Resources    

  • MiFluFocus - A weekly influenza surveillence report that comes out Thursdays each week.
  • - A State of Michigan web site dedicated to influenza (flu).
  • A State of Michigan web site dedicated to emergency preparedness.
  • The National Influenza Preparedness web site.
  • Laboratory Biosafety Guidelines- These biosafety guidelines have been developed for Michigan laboratories handling and processing specimens associated with influenza.
  • To expedite receipt of laboratory results, we urge all submitters to register for fax transmittal of reports. Fax agencies receive their reports the day testing is completed. This is especially important for those submitting specimens for H5 PCR testing. Non-fax agencies receive reports via the U.S. Post Office. This method will delay your report by several days.  Registration information.

National influenza surveillance summary information: 


 Past Influenza Season Data  


Rev. 08/26/2016