First case of highly pathogenic H1N1 avian influenza virus infection in a black bear.
An adult female black bear exhibiting unusual behavior was reported by visitors in June at Forillon National Park in the Gaspesie Region, Quebec, which was early in the day on Tuesday, June 14 this year.
It wandered around vehicles, went down to the water fishing harbour, began swimming in circles came out and hit a wall. Later that day Parks Canada found the animal lying down in a ditch breathing shallowly and unresponsive to sound. Convulsions and spasms were also observed. Due to its condition the animal was anesthetized by Parks Canada employees and then euthanized for humanitarian reasons. Various organs samples by park employees were sent to the RCSF- Quebec for analysis.
Microscopic examinations of the tissues revealed the presence of inflammatory lesions in the animal’s brain (meningoencephalitis).
Three groups of birds have particularly been affected by this virus so far, geese and ducks., (scavenger birds, gulls, ventures and bald eagles, common eiders, fatal infection have also been reported in a few species of mammals, foxes, racoons, skunks and harbour seals. The cases described here is, to their knowledge. The first case of fatal infection by an H5N1 AIV infections have been documented during the months of May and June in the region.
The documentation of these cases of infection mammalian species can help us better understand which genetic modifications can potentially promote infections in mammals and humans.
Although the transmission of this avian influenza virus to humans and domestic animals seems low, it is recommended not to approach and especially not to touch a sick or dead animal. We will also prevent contact between our pets and dead wild birds or mammals. It is also recommended that meat from game birds or mammals be thoroughly cooked.