One only needs to search the internet to find answers to questions one may have regarding puppy vaccines. Here is an article I found quite comprehensive. It includes the Pros and Cons of vaccinating your puppy.
Vaccinations are an essential part of a puppy’s health care plan. Though there is some controversy about the potential risk of vaccines and over-vaccination, most experts agree that certain basic immunizations are essential to keep your puppy from getting sick and prevent the spread of disease.
Please follow the link for the full article http://dogs.about.com/od/veterinarycare/a/puppyvaccs.htm
*Always discuss your pet’s health needs with a qualified veterinarian