ABSTRACT
The elimination of “non-self” depends on effector mechanisms able to neutralize or eliminate the source of antigenic stimulation. This chapter focuses on how a humoral immune response is elicited, the differences between a primary and a secondary immune response, and the mechanisms involved in activation and suppression of a humoral immune response. Also discussed is the humoral immune response at the mucosal level. The second half of the chapter is dedicated to the induction of passive and active immunity as a way to protect against a variety of infectious diseases. The different types of vaccines, their benefits, and their drawbacks are discussed. The importance of immunoprophylaxis in preventive medicine as well as the recommended vaccination schedules are stressed.
