Q. How do vector vaccines work to provide immunity?
(A) By introducing a weakened or inactivated virus into the body
(B) By directly attacking and destroying pathogens in the body
(C) By placing the virus in a modified version of a different virus
(D) By entering directly into the cells and enabling them to create spike proteins
Answer: A
Viral vector-based vaccines use a harmless virus to smuggle the instructions for making antigens from the disease-causing virus into cells, triggering protective immunity against it.
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