Vaccinations elicit a primary immune response so that secondary immune responses are rapid and symptoms are mild. vaccinations elicit a primary immune response so that secondary immune responses are rapid and symptoms are mild. a. true b. false

The answer would be true

The objective of vaccination is to elicit the primary immune response by introducing pathogen antigens. This antigen can be a whole weakened pathogen or just part of pathogen proteins. 
The antigen will activate the primary immune response cascade that will activate of B-cells and T-cells from the secondary immune response. This will makes secondary immune response ready when the real pathogen comes.