Final answer:
Bacterins are commonly used to vaccinate animals against diseases, but they do not protect against Lyme disease.
Step-by-step explanation:
Bacterins are commonly used to vaccinate animals against various diseases. However, they do not typically provide protection against Lyme disease. Lyme disease is caused by a bacterium called Borrelia burgdorferi, which is transmitted to humans and animals through the bite of infected black-legged ticks. To prevent Lyme disease, other measures such as tick control and personal protective measures should be taken.