Twelve horses in Louisiana have died from suspected botulism, and nine horses remain hospitalized.

One horse in Bay County, Michigan, is positive for strangles, and 16 horses have been exposed.

Another horse at Churchill Downs in Jefferson County, Kentucky, has tested positive for EHV-1, bringing the total cases to seven.

A 22-year-old gelding in Livingston County, Michigan, was euthanized after contracting West Nile virus.

The horse resides in Skagit County.

Fifteen horses became acutely ill at a Quarter Horse breeding farm in Vermilion Parish County, and 12 have died.

One horse in Frederick County has tested positive for EHV-1 with neurologic symptoms, and 19 horses are exposed.

The horse lived in Shelby County, and additional horses are being quarantined in Madison County.

One horse in Berrien County, Michigan, is positive for strangles, and 28 have been exposed.

The mare resides in Elbert County, and she is currently still alive.

6 horses at a facility in Thurston County tested positive for EHV-4, and 1 tested positive for EHV-4 and strangles.

The horse resides in Burleigh County.

5 additional horses at Churchill Downs are positive for EHV-1.

The horse resides in Two Hills County and was purchased from the Fort Assiniboine area earlier in the year.

A mare in Madison County tested positive for EHM and was euthanized. Twenty horses have been exposed.

A horse in Surry County, North Carolina, is positive for EIA, and another case is suspected in Henderson County.