Will Falconer, DVM Moderator
I'd recommend you learn about titers and their limits. If you're interested, here's a page devoted to that. In brief, low titers don't mean immunity has run out.
Vaccinating an animal for rabies who's already been vaccinated for it is negligent and unnecessary when you understand this.
I have to laugh when vets propose more rabies vaccines as a means of "protecting" families or worse, "my vet techs and staff." They're missing a fundamental understanding called Duration of Immunity. But that's not surprising: we weren't well trained in immunology as vets, and I'm sure tech training was no deeper than what we received.