Local populations have been reduced or eliminated through disease (especially the phocine distemper virus) and conflict with humans, both unintentionally and intentionally.
en.wikipedia.org Farmers vaccinate the young kits for botulism, distemper, enteritis, and, if needed, pneumonia.
en.wikipedia.org Common interventions include vaccination against common animal illnesses, such as distemper or rabies, and dental prophylaxis to prevent or inhibit dental disease.
en.wikipedia.org Also, even if the dog owner is not concerned about adenovirus, coronavirus, parvovirus, or parainfluenza, they should vaccinate their dogs to protect them against distemper.
en.wikipedia.org Canine distemper virus tends to orient its infection towards the lymphoid, epithelial, and nervous tissues.
en.wikipedia.org