How do vaccines work if the pathogen in them is dead?
A. The vaccine alters your body chemistry so that whichever pathogen you are vaccinated against cannot even enter your body in the first place.
B. It causes antibodies to be generated that take the form of the pathogen, so the next time it is encountered, the antibodies make the pathogen think the body is friendly and not a target.
C. It causes memory cells to be generated so that next time the pathogen is encountered the immune response is very fast, killing the pathogen before it can do any harm.
D. The immune system holds on to the dead pathogen from the vaccine, and if you are infected again, the new pathogen recognizes the dead
Answer (1)
Vaccines with dead pathogens trigger an immune response that produces antibodies and memory cells. These cells help the body respond quickly and effectively to real infections in the future. This preparation prevents or lessens the severity of the disease. ;
