For those people who choose to do the minimal vaccination schedule instead we recommend and require hat you follow the protocol developed by Dr. Jean Dodds which you can find here: http://www.dogs4dogs.com/kitten-shots.htm
For more information about the dangers of vaccination, especially over-vaccination please read some of these wonderful articles.
Vaccination for Cats, Harmful or Helpful? by Dr. Don Hamilton published on Holisticat
And lastly, learn what vaccinosis is, how to recognize it and what to do about it. Vaccinosis is the term used to define various adverse reactions to vaccines and they can take many forms that include physical and emotional ailments.
Information on Vaccinosis - http://www.rawfedcats.org/vaccinosis.htm
Remedies for Vaccinosis (and holistic vets that can consult):
http://www.naturalrearing.com (my favorite)