Will Falconer, DVM Moderator
Hey Dora,
I'd do the titer, but I might not interpret a positive titer as coming from that early shot. Seven weeks is pretty borderline, Mom's antibodies could have still been there to negate any immune response. That's not to say your 11 mo has no immunity unless she's been raised in near isolation. I'd bet, if she's been around other dogs, dog parks, etc, she'll have a titer to parvo. That virus is very widespread. If there's no titer for distemper, I'd assess your risk. It's a pretty newsworthy disease, especially in dog circles.
If no one has heard of it in 30 years, I'd be hard pressed to recommend another round of shots. And parvo is mostly a puppy virus. So, again, not near the risk at 11 months when the immune system has matured.
Weigh your risks of getting either of these two (ignore the rest, they are not deadly), see what your titer shows, and decide.