Which of the following immunogens is MOST effective as a vaccine?
A) chemically inactivated bacteria
B) dead virus
C) live virus
D) toxoid

Question

Quizplus · Accepted Answer

Live virus immunogens are the most effective as vaccines because they stimulate both humoral and cellular immune responses, providing long-lasting protection. Dead viruses and chemically inactivated bacteria can still provide protection, but they mainly elicit humoral immune responses. Toxoids can also provide protection, but they only target the toxin produced by a particular pathogen and not the pathogen itself, meaning they may not work against all strains of a particular pathogen.

Which of the Following Immunogens Is MOST Effective as a Vaccine