My understanding on the latest lepto vax is they now include coverage of all four types that can infect a dog. I still think there are issues with high rates of reactions. And I still think there is the issue with it only being effective for about 9 months. I think that’s because it’s a bacterial infection versus a viral infection like most other diseases that are vaxed for.
I do know that I’ve *never* allowed any of my dogs to get it and none of them ever got Lepto.
However, one worthless vet vaxed my Dobermann for Lepto *after* I told them to specifically NOT to and he had a bad reaction to it.
They were too cheap/lazy/know it all to give individual shots like my regular vet does but we just happened to be there for something else when they noticed it was time for his 4th puppy shot series.
[Dobes require an extra Parvo shot]
Nine months of *possible* protection is not worth the risk.
I resent the Lyme vax only being effective for 6 months max but in my area, it’s pretty much a necessity.