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Avian influenza updates

Highly pathogenic avian influenza cases are now confirmed in domestic birds, wild birds and wild mammals throughout most of North America. HPAI was first detected in Michigan in one domestic non-commercial flock in Kalamazoo County in late February 2022. On March 15, 2022, a mute swan collected in Monroe County by the U.S. Department of Agriculture Wildlife Services was confirmed to have HPAI, subtype H5N1. On March 18, 2022 six Canada geese and two tundra swans in St. Clair County and two snowy owls in Macomb County collected by the Michigan Department of Natural Resources were confirmed with HPAI, subtype H5N1. Since then, Michigan has had more than 160 positive detections in wild birds and mammals. The Michigan Department of Agriculture and Rural Development continues to take swift action in response to this disease and is closely monitoring and responding to reports of sick domestic birds and HPAI throughout the state. Although the rate of positive HPAI detections slowed over the summer, there has been a recent uptick in reports of wild bird die-offs, neurologically abnormal wild birds and HPAI detections. Influenza experts expect a resurgence of the virus as waterfowl begin their fall migrations. The strain now present in North America has caused extensive illness and death in a range of wild bird species. In particular, waterfowl, raptors, scavengers, gulls and terns have been affected.


Table of HPAI wild bird and mammal testing information as of 11/04/2022

Confirmed positive HPAI cases by county

County Total positive
Alger 1
Allegan 2
Alpena 3
Antrim 2
Arenac 1
Baraga 1
Bay 8
Benzie 1
Berrien 1
Branch 1
Cass 1
Charlevoix 3
Cheboygan 1
Chippewa 4
Clinton 3
Crawford 1
Delta 7
Dickinson 2
Eaton 2
Gladwin 3
Gogebic 1
Grand Traverse 5
Hillsdale 2
Huron 1
Ingham 2
Ionia 3
Iosco 4
Iron 2
Jackson 2
Kalamazoo 3
Kent 2
Lapeer 1
Livingston 1
Mackinac 5
Macomb 5
Manistee 2
Mason 2
Mecosta 1
Menominee 1
Midland 4
Missaukee 2
Monroe 1
Montmorency 2
Muskegon 3
Newaygo 1
Oakland 5
Ogemaw 1
Ontonagon 2
Osceola 4
Otsego 3
Ottawa 1
Presque Isle 2
Roscommon 4
Saginaw 6
Sanilac 1
Schoolcraft 1
Shiawassee 1
St. Clair 24
Tuscola 3
Washtenaw 1
Wayne 2
Wexford 2
Z - Grand Total 169