3. Leptospirosis shot . leptospirosis shot is another infectious bacterial organism usually discovered in the urine of pets such as dogs and other animals like rodents. You can be infected when your pet inhales the infected urine as the urine has the power to keep the organism while your pet will transfer the disease to you through its urine. This disease can also be transmitted through swimming in contaminated water; this is a health issue for individuals who work in the farm and animal pens. If this is left untreated, it can result in severe health disorders such as liver failure, meningitis, kidney damage, and death of an individual. Make sure you do not swim in waters infected with animal urine and request from your veterinary doctor if there is a need for a vaccine in your area.