Three grizzly bears were euthanized in Montana after they became ill and tested positive for the avian influenza (HPAI) virus, wildlife officials say.
Three grizzly bears were euthanized in Montana after they became ill and tested positive for the highly pathogenic avian influenza virus, according to the state's Department of Fish, WildlifeThese were the first documented cases of bird flu in a grizzly in Montana and the first nationwide for this outbreak of HPAI, according to Dr. Jennifer Ramsey, the department's wildlife veterinarian.
"Fortunately, unlike avian cases, generally small numbers of mammal cases have been reported in North America," Ramsey said. "For now, we are continuing to test any bears that demonstrate neurologic symptoms or for which a cause of death is unknown." "When wildlife mortalities occur in such small numbers or individuals, and in species like skunks, foxes and bears that don't spend a lot of time in situations where they are highly visible to the public, they can be hard to detect," the wildlife veterinarian said.
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