Everyone has done a great job of covering the basics. Two things (hopefully, I didn’t miss them already mentioned).
You can get titers for rabies, at least, & probably others.
Ft Dodge is a manufacturer I avoid.
Three things- for the FRiend whose fur kid has seizures & can’t take HW prevention. I just ordered Dimmitrol (same as the old Filaribits) from one of the Australian pet pharmacies. If you decide to go this route, have your critter tested first, even if they have been tested recently.
Sending you prayers, cva66snipe.
Thanks. I gotta hit the hay soon. Four hours sleep in the last 30 hours is a wearing me down. If she isn’t a lot more perky tomorrow I’m going to take her to the Vet she saw last year when it happened. My gut instinct says vaccine reaction as does common sense with the timeframes exactally matching. I’ve been a make shift nurse {caregiver} for 28 years and my gut instinct usually holds true.