The immune system of both dogs and cats mature fully at six (6) months. If a modified live virus vaccine is given after 6 months of age, it produces an immunity which is good for the life of the pet (i.e.: canine distemper, parvo, feline distemper). If another modified live virus vaccine is given a year later, the antibodies from the first vaccine neutralize the antigens of the second vaccine and there is little or no effect. The titer is not boosted, nor are more memory cells induced.
The annual booster for parvo and distemper are unnecessary. Additionally, they subject the dog to the potential risks of allergic reactions and immune-mediated hemolytic anemia.
There is no scientific documentation to substantiate the annual administration of Modified Live Virus Vaccines.
Puppies receive antibodies through their mother's milk. This natural protection can last 8 - 14 weeks. Puppies and kittens should NOT be vaccinated at LESS than eight (8) weeks of age. Maternal immunity will neutralize the vaccine and little protection (0-38%) will be produced. Vaccination at six (6) weeks will, delay the timing of the first highly effective vaccine. Vaccinations given two weeks apart suppress rather than stimulate the immune system. A series of vaccinations is given starting at 8 weeks and given 3-4 weeks apart up to 16 weeks of age. Another vaccination given sometime after 6 months of age (usually at 1 year 4 months) will provide a lifetime of immunity.
According to Dr. Schultz, AVMA, 8-15-95, when a vaccinations (Distemper and Parvo)series given at 2,3 and 4 month and again at 1 year with a Modified Live Virus, puppies and kittens will program memory cells that survive for life, providing lifelong immunity.
There are no new strains of parvovirus as one manufacturer would like to suggest. The parvovirus vaccination provides a cross immunity for all types.
Rabies vaccination is required by law. Check with your vet or local health department for the requirements in your area. Some states require an annual vaccination, where others allow the vaccinations to be given every three years. The rabies vaccine is a killed vaccine and does NOT provide lifelong immunity.
Multiple components in vaccines compete with each other for the immune system adn result is lesser immunity for each individual disease as well as increasing the risk of a reaction.
Canine Corona Virus is ONLY a disease of puppies. It is rare and self limiting (adult dogs get well in 3 days without treatment.) Corona virus does not cause disease in adult dogs.
Leptospirosis "Lepto" vaccine is immune-suppressive to puppies less than 16 weeks old. It is a common cause of adverse reactions in dogs. Protection is short lived and does not outweigh the negative effects.
Rattlesnake Vaccine has NOT been proved to be substantially effective. Insufficient research supports the available information. It is felt that the vaccine would only provide protection if given a few days before a snakebite.