VMC-0083
QUESTION
Type of vaccine with potential for reversion to virulence?
OPTIONS
(A) Killed vaccines
(B) Live Vectored vaccines
(C) Attenuated vaccine
(D) Recombinant vaccines
ANSWER
(C) Attenuated vaccine
EXPLANATION
Live attenuated vaccines contain organisms that have been weakened but retain the ability to replicate, so mutations or genetic changes can, in some circumstances, lead to reversion toward virulence. Therefore option C is correct; killed, subunit, and most recombinant non-replicating vaccines do not have the same classic reversion risk.
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