When a kitten receives a vaccination, a small amount of virus is injected in the kitten causing an immune response that builds up the kitten’s immunity against the disease. Today’s medicine alters the virus in the vaccinations that create the immune response without actually being able to cause the disease, so that they are effective but also safe.
The immune system works in two ways. First, it creates antibodies that help fight off the disease and protect the kitten from the disease as long as the antibodies are in the cat’s system. This is why booster shots are given annually. Secondly, it makes some cells create chemicals to fight off or kill the disease. Giving multiple sets of shots creates a faster and stronger reaction each time, giving the cat more protection.
Most kittens receive their first set of shots between 8 and 10 weeks old. They receive three sets of shots, given 3-4 weeks apart. If a kitten has received an earlier set of shots from a breeder, it is important to get a veterinarian’s recommendation for the kitten’s vaccination schedule. Some breeders, for example, vaccinate kittens earlier if they are weaned young. Rescue workers may also have used a different vaccination protocol for kittens at high risk of disease.
Resources: PetEducation.com
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