Question

Vaccines and pathogens have different intended consequences, yet they elicit similar physiological changes in the individual. How does the body respond if both events happen concurrently in an individual?

Answer 1

Vaccines are of different types such as the injection of specific antibodies directly to the bloodstream or by the introduction of the inactivated pathogen to the bloodstream which would trigger the production of antibodies. Here, by the word "vaccine" we are discussing the second vaccine concept mentioned. This is primarily because the second vaccine concept has physiology in the body which is very much similar to that of one when a body is attacked by the pathogen.

Here the question is what happens when both the vaccine and pathogen attack happen simultaneously. In this scenario, it must be noted that the vaccine would be very much ineffective as the time taken to produce antibody would be longer and it would be so late that by the antibodies are produced, pathogens must have invaded multiple body systems causing severe damage. Hence, to conclude body response would be production of specific antibodies but would fail in task due to overwhelming attack of the antibodies by huge number of pathogens.