Michigan Euthanizes 31,000 Salmon Due to Disease Outbreak

The decision followed an ineffective 28-day treatment period for bacterial kidney disease at the Harrietta State Fish Hatchery.

The salmon were sick with bacterial kidney disease, which has historically impacted trout and salmon populations.
Officials suspected the disease originated from latent bacteria in brown trout at the hatchery.
The euthanized fish were buried in a pit after being treated with carbon dioxide.
Michigan State University scientists are working on a vaccine to prevent future outbreaks.
The decision was made to protect other fish populations in Michigan waters.