Vaccinations and titers test

Hi, I have a dog with AIHA. Daisy survived treatment and is doing great!! A huge thanks to you all!!!we could not have done it without you.

My question is regarding titers testing- from what I know the purpose is to determine if your dog’s previous vaccines are still working. Why vaccinate if last years vaccines are still working?

This would be great for us because we almost lost daisy due to yearly vaccines. We did not know she has AIHA. But if vaccines are still working, after a year that would be great news.

Carrie