This bacteria is just as likely to infect you as it is to infect your doggy.
Keep this in mind when handling your dog, especially when you first start to suspect that she may have Leptospirosis.
You will want to wear latex gloves, and avoid all urine or blood as best as you can.
If your dog has urinated on the floor or in the house, you should immediately clean the area with a disinfectant. Be sure to wear gloves and keep small children out of the area.
Speaking of children: Small children are at an especially high risk of infection. Just like puppies, their immune systems are not fully developed yet, and so they are more likely to be unable to fight off the bacteria naturally.
Simply take all proper pre-cautions, wash your hands constantly when handling your pet, and provide all antibiotics as prescribed.