When I was growing up in CT many, many years ago(!) nobody vaccinated horses. Dogs were always required to be vaccinated. Now, most stables and any event requires proof of vaccination. That means a vet certificate - self-vaccination is not recognized.
As an adult I worked in animal protection in CT. Risk of rabies was considered fairly low at that time. There had not been a confirmed case of rabies outside of bats in about 50 years. (And not a lot in bats either). Then suddenly we started seeing rabies in raccoons and then skunks and other wildlife. The explanation I heard (but cannot confirm) was that some guys wanted better raccoon hunting and there were not enough raccoons in their area. So they went to their friends place in another state (perhaps Virginia) and live trapped raccoons to hunt. They reportedly did the “restocking” for a while and apparently one or more of the animals had rabies and it quickly spread.
I occasionally had the “fun” job of taking dog heads to the State Lab to be tested for rabies. In one case a couple of kids were taking care of a neighbors Doberman who was not feeling well. The kids tried moving the food around to entice the dog to eat and it nipped one kid. Then it laid down and died. The vet called as they did not have a refrigerator to keep the head in (only a small fridge for medicines)and it could not be left out or frozen, so it had to be refrigerated somewhere else or transported 60 miles to the lab to be refrigerated over night there. As it happened I had just gotten a new (used) refrigerator that day. I picked up the head (wrapped in several plastic bags) and put it in my otherwise empty fridge until the next day. My mom called that night and asked me if I had gotten the refrigerator and had I put anything in it? :eek: Fortunately the dog tested negative.
More recently I know of one family that had a raccoon blunder into their garage. Their dog sort of attacked it (dog was no kind of hunter) and did have some contact. Animal control did finally capture the animal and it was positive for rabies. Fortunately the dog was vaccinated so just had to observe a quarantine. The family did post-exposure treatment for anyone that was home and came in contact with the dog. Not fun! I also know of a farmer in Orange County, NY who had a heifer bitten by a rabid skunk. That heifer and one with it were put down and the rest of the heifers (penned separately) were quarantined for quite a while. The vet wanted to make farmers aware of the risks since rabies in cattle can look like choke and the farmer would then put his/her hand in the cow’s mouth and really increase the risk of contracting the virus