Sadly, a young puppy client of mine contracted Leptospirosis and died. PLEASE have your dogs tested and vaccinated. It is apparently common in Vero Beach and there was nothing about this dog's life that would have predicted contracting this often fatal infection. The onset is VERY quick. 

Humans can contract it from their pets, too. 

Dog-Killing Bacteria Is Year Round Problem In Florida

Florida Dept of Health