Lepto is something I wrestled with in deciding whether or not to give my boys because we live in a heavily wooded area, next to a farm, with many critters and cattle. Our vet and I decided against it.
I thought that I had read that there are hundreds of strains of Lepto, certainly many as Cathy indicated. The 4 that the vaccine covers are not the only ones that are cause for concern.
The other thing I recall reading is that the vaccine has to be given every 6 - 8 months to be truly effective.
Lepto is scary stuff, and if I lived on the farm and had cattle die from it like another member here did, I would probably be inclined to vaccinate my dogs with what is available.
__________________ Kristin, Max and Teddy  |