Description should include

factors affecting efficacy of vaccines (e.g., presence of maternal antibodies, health status, breed predispositions, environmental risks)
vaccination protocols established by AVMA, AAFP, AAEP, and local veterinary schools for selected species (e.g., dogs, cats, horses, ferrets)
reasons for not vaccinating an animal (e.g., potential for anaphylaxis, chronic debilitating disease)
use of antibody titers to assess immunity to certain diseases and avoid over-vaccination
vaccinations dictated by state law or other legal mandates (e.g., interstate/international travel restrictions).

Process/Skill Questions:

Why is prevention preferred over treatment?
Why is a vaccination schedule important to an animal's health?
What factors should be considered in establishing a vaccination schedule for an animal?
Why should animals younger than six weeks not receive vaccinations in most cases?
How can a pet’s lifestyle affect the risk of contracting a disease?
How does geography affect the vaccination guidelines for traveling pets?
What factors should be considered when vaccinating young puppies?
How often are booster vaccinations administered, and why might these recommendations change?
What vaccinations are required by law to be administered by a certain age? Why?