Northern innovation in rabies prevention and control: The Weeneebayko Area Health Authorities (WAHA) dog population...

Remote northern communities in Ontario face unique challenges in rabies prevention and control. With large, free-roaming dog populations at high risk of exposure to rabies from wildlife, and a lack of regular access to veterinary services and vaccinations, these communities run a higher risk of human exposure to rabies than southern regions of the province.

To provide the baseline data on a novel approach to controlling the dog population in the Weeneebayko Area Health Authority (WAHA) in northern Ontario, implemented as part of a sustainable, humane and cost-effective pilot project to manage dog population numbers and improve public safety.

In 2015, WAHA launched a large-scale two-year regional project that involved microchipping all dogs in the region to quantify and monitor population levels, vaccinating them with canine core vaccinations (including rabies) and piloting the use of an injectable ganodotropin-releasing hormone (GnRH) agonist contraceptive implant in female dogs. The Project's objectives included control of dog population numbers, reducing aggressive behaviours in community dogs, reducing the risk of rabies in communities, improving the health of community dogs and educating community members about the importance of dog population control.

In 2015, 513 dogs were microchipped and vaccinated as part of the WAHA Project: 211 females and 301 males. Seventy-six intact, free-roaming females were given the contraceptive implant, 113 females were identified as previously spayed and only 22 females were either too young or too small (toy breeds) to receive an implant.

While the final outcomes of the WAHA Project are still pending, preliminary findings, including dog population demographics and observed dynamics, support the feasibility of contraceptive implants in female dogs as a primary intervention to quickly and cost-effectively reduce dog population numbers in remote northern regions and reduce the risk of rabies transmission.