"Antibody interference" refers to a situation where certain antibodies prevent or disrupt the action or effectiveness of other antibodies, which can hinder the immune system's ability to fight off infections or diseases. Full definition
And to minimize the risk of maternal antibody interference with the vaccination, the final dose of the initial series must always be given between the ages of 14 and 16 weeks. (articles.orlandosentinel.com)
To avoid the potential for maternal antibody interference, dogs vaccinated at less than 9 weeks of age should receive 3 doses of the combination vaccine, each administered 3 weeks apart. (zoetisus.com)
Kitikoon P, Nilubol D, Vincent A, Yu S, Erickson B, Janke B, Hoover T, Sornsen S, Thacker E. Immune response and effect of maternal antibody interference on vaccination with a bivalent swine influenza vaccine. (zoetisus.com)