Will Falconer, DVM Moderator
Hi Jan, and welcome!
Yes, I have seen this with one rabies vaccination, in isolation, but like Tigger, most have a past history of vaccination. I think if you look through the comments on Part 1, you'll see some stories of "just a rabies vaccine" causing illness quite often.
It's why I put vaccination at the top of my watch list for animal people to think long and hard about. The effects for ill from vaccination can last a very long time and are not easily reversed, compared to say, making a bad food choice or a bad flea control choice, which can often be "fixed" more quickly and easily. Vaccinosis is much deeper than intoxication.