Hi Sgbraun19,
Have been reading some YorkieTalk threads about this vaccine. A few are linked below; there may be others.
Still reading, but there seem many more YorkieTalkers saying
than otherwise.
See:
"
Lepto vaccine question" (started 2013)
"
Should Bailey have a Leptospirosis vaccine?" (started 2012)
"
Lepto Vaccine Help" (started 2010)