How do vector vaccines work to provide immunity?
- ABy introducing a weakened or inactivated virus into the body
- BBy directly attacking and destroying pathogens in the body
- CBy placing the virus in a modified version of a different virus
- DBy entering directly into the cells and enabling them to create spike proteins
Show answer and explanation
Correct answer: (c) By placing the virus in a modified version of a different virus
Explanation
Vector (viral vector) vaccines use a harmless modified virus to carry the genetic material of a disease-causing virus into the body.
The host cells then produce the pathogen's antigen (such as the spike protein), triggering protective immunity.
Examples include Oxford-AstraZeneca and Sputnik V; this differs from inactivated-virus or mRNA vaccines.