There are many posts on this forum about canine vaccines that will help you in making your choices. Below are four links with excellent information.
Duration of Immunity to Canine Vaccines: What We Know and Don't Know, Dr. Ronald Schultz
http://www.cedarbayvet.com/duration_of_immunity.htm
The
2003 American Animal Hospital Association's Canine Vaccine Guidelines are accessible online at
http://www.leerburg.com/special_report.htm .
The
2006 American Animal Hospital Association's Canine Vaccine Guidelines are downloadable in PDF format at
http://www.aahanet.org/PublicDocumen...s06Revised.pdf .
Veterinarian, Dr. Robert Rogers,has an excellent presentation on veterinary vaccines at
http://www.newvaccinationprotocols.com/.