If anamnestic response is high after receiving a primary vaccine many years ago, there is most likely little to no need for a booster dose.
2.
Anamnestic response, the rapid production of antibodies after a stimulus of an antigen, is a typical way to measure the need for a booster dose of a certain vaccine.
परिभाषा
renewed rapid production of an antibody on the second (or subsequent) encounter with the same antigen पर्याय: anamnestic reaction,