While Leptospirosis is now being found in Arizona as well as California, we do not believe that "Lepto" is a real threat to our dogs per Marge Mehagian. It seems that the treatment can be worse than the disease. Leptospirosis is a bacterial infection that progresses through the animal's body. This infection can be fatal for animals if the infection progresses, causing severe damage to the liver and kidneys. Younger animals with less developed immune systems are at the highest risk for severe complications. The disease is treatable.
Please contact your veterinarian for their recommendation on getting your dog vaccinated.