Here's why:
* Leptospirosis vaccines contain killed bacteria: The leptospirosis vaccine uses dead bacteria, meaning they are no longer alive and cannot cause the disease.
* Vaccines stimulate the immune system: The vaccine works by introducing these dead bacteria into the dog's body, triggering the immune system to create antibodies that will fight off the real bacteria if the dog ever encounters them.
* No live bacteria in the vaccine: There's no risk of the dog getting sick from the vaccine because it does not contain any live leptospirosis bacteria.
It's important to note: While the vaccine is very safe and effective, there can be some mild side effects like soreness at the injection site, but these are usually temporary.
If you have any concerns about your dog's health or the leptospirosis vaccine, it's best to consult with your veterinarian.