Influenza Suspect Disease Alert - MNAIW11-23 (Becker County)

Minnesota Board of Animal Health sent this bulletin at 10/17/2023 05:52 PM CDT
board of animal health

CONFIDENTIAL - INTERNAL DISTRIBUTION ONLY

Influenza Suspect Disease Alert

Testing conducted on samples from the following Minnesota poultry flock(s) indicate exposure to influenza virus. These results are based on screening tests as part of the State’s continued surveillance efforts to detect poultry diseases. The Minnesota Board of Animal Health will release more information after the National Veterinary Services Laboratories (NVSL) conducts confirmatory testing.

Alert Level:

 critical

H5 test results identified in this case:

Additional regulatory action is mandated.

MNAIW11-23 – Becker 05

  • Flock is located in Becker County, MAPP Code =03EVER08A
  • Breeder turkey toms; 54 weeks of age; total flock size 19,600.
  • Flock experiencing increased mortality.
  • Diagnostic samples collected and submitted to the Minnesota Veterinary Poultry Testing Laboratory on October 17, 2023.
  • 2/3 pooled oropharyngeal samples were PCR positive for influenza A (CT 24.07-24.65); 2/3 samples were H5 positive (CT 23.04-23.33). See explanation of molecular testing below.
  • H5 status: positive
  • Samples are being submitted to the National Veterinary Services Laboratories (NVSL) in Ames, IA for confirmation.

Please remember to be vigilant with your biosecurity and help keep Minnesota’s poultry healthy.  Contact your veterinarian if you suspect any diseases or illnesses in your flock.

ALERT LEVEL DESIGNATION

watch

Serology positive flock, no clinical signs consistent with HPAI.
Warning

Virus detected, no clinical signs consistent with HPAI.
critical

Clinical signs or test results indicative of HPAI.

Testing information:

  • Serologic testing (AGID or ELISA) is a diagnostic tool that looks for the presence of antibodies in the blood.  The detection of antibodies are an indication that the bird has been exposed to a disease agent and its body produced antibodies in response to a virus/bacteria. It does not indicate whether or not the disease causing agent is still present within the flock.
  • Molecular testing (PCR) is a diagnostic tool that looks for the presence of the disease agent (virus or bacteria) in the bird.  Positive influenza results indicate that the bird is infected and shedding virus.
  • Testing at the MPTL or Veterinary Diagnostic Laboratory (VDL) are to be interpreted as preliminary results and require confirmation at the National Veterinary Services Laboratories (NVSL).

If there are any questions or concerns please contact your veterinarian or the MPTL at 320-231-5170.

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