Rabies and canine distemper in an arctic fox population in Alaska

Area of Science:

• Veterinary Science
• Wildlife Disease Ecology
• Zoonotic Diseases

Background:

• Rabies outbreaks in wildlife pose risks to humans and domestic animals.
• Arctic foxes (Alopex lagopus) are known rabies vectors in northern ecosystems.
• Human-wildlife conflict can necessitate wildlife population management.

Purpose of the Study:

• To determine the prevalence of rabies and canine distemper in arctic foxes following an incident involving human exposure.
• To assess the risk of zoonotic disease transmission from arctic foxes in the Prudhoe Bay region.

Main Methods:

• Collection and testing of 99 arctic foxes culled in Prudhoe Bay, Alaska.
• Serological testing for rabies antibodies and direct fluorescent antibody testing for rabies virus in neural tissue.
• Testing for canine distemper virus antibodies and neural tissue presence.

Main Results:

• Rabies exposure was detected in 5 out of 99 (5.05%) arctic foxes.
• Only one fox tested positive for active rabies infection via neural tissue analysis.
• No evidence of canine distemper virus infection or antibodies was found in any tested foxes.

Conclusions:

• While rabies exposure was present, active rabies infection in the Prudhoe Bay arctic fox population was low at the time of the study.
• Arctic foxes in this region do not appear to be a significant vector for canine distemper.
• Public health interventions and wildlife monitoring are crucial following zoonotic disease incidents.