Cats Maternal Antibodies The point of the 3 series kitten vaccines is in hope to find the right time when the Maternal Antibodies wear off on kittens. Maine Coon kittens nurse much longer than a regular kitten. Maternally Derived Antibodies (MDA)​ For both breeders and pet owners who purchase a kitten, one of the first issues to be decided are the kitten series vaccinations. What ones, when and why. By far, the most common reason for vaccines not immunizing is the presence