There were revised vaccine protocols given out in 2006 by the AVMA. This is the site where you can see them and what THEY recommend as the MINIMUM vaccines required to ensure immunity:
https://secure.aahanet.org/eweb/dyna...cineGuidelines
MOST vets overvaccinate. That is what they learned at the time and they are adamant about it. I will NOT allow my animals to be vaccinated over one year of age.
Think about it. You were vaccinated last when? Do you get a new vaccine every year for polio, etc.? Of course not. Vaccine immunity lasts years and years. You do not need to vaccinate your pets so often.
By law, some pets MUST be vaccinated for rabies more often than I would like but they have it down to every three years now.
If you read the guidelines from the link above, you will see your pet is fine.
If you are dealing with a shelter environment, there are different guidelines.
If you are dealing with a dog who goes to doggy daycare or plays with a ton of other dogs in the dog park, you want to be very careful to follow those guidelines.
A lot of people, like me, don't vaccinate after the one year booster is given.
Please read the guidelines given by the link above and then you should know what's best for your pet. I'd never vaccinate a four year old dog who has minimal exposure to other dogs but you must read the information and make an informed decision yourself.
), and 6-month parvo vaccines were touted as a good way to increase profits, by playing on the customers' fear of such a dread disease. 
