Nope. Not anywhere worth it, unless you have a distemper outbreak in your area - even then, titer first. I assume you have been vaccinating all the dog's life on a schedule? If so, the titer test will confirm immunity is still high.
SG S-Hunter vom Geistwasser CA CGN TT (Airport Wildlife Control K9)
Zenna vom Geistwasser
"May my enemies live long so they can see me progress."