From CBC New Brunswick:

The expansion of the province's wildlife rabies vaccination program is driven by a desire to keep rabies from spreading into the St. John River Valley, which has a higher density of raccoons.

After being concentrated in Charlotte County, the program is expanding this summer to include Fredericton, Saint John, and Carleton County.

"We're hoping to keep the rabies virus out of the St. John River Valley," said provincial veterinarian Jim Goltz. "We know that there is a higher density of raccoons in river valleys, agricultural areas and cities."

"We just figured strategically, both Fredericton and Saint John would be ideal places to have boundaries for our preventive actions."

For more see Rabies vaccine expansion aims to protect St. John River Valley