In the late 1800s,a Frenchman observed that individuals who recovered from a disease were not susceptible to that same disease again.Therefore,he proposed that the agent that caused syphilis should be given to all young,healthy people as a vaccine to prevent them from getting a serious case of the disease.Although the mode of action of vaccines was not yet known,Pasteur argued vehemently against this proposal.Today,we do not follow this procedure for syphilis.Why?

Question

Quizplus · Accepted Answer

Vaccines are typically made from weakened or inactivated disease agents, or from parts of the pathogen. Using the actual syphilis organism as a vaccine would not be safe because it would spread a full-blown, serious disease agent rather than a weakened version. Furthermore, syphilis is not an autoimmune disease (C) and Pasteur's authority is not the sole reason why his ideas prevail today (D). While vaccines do work against only a limited number of pathogens (A), this is not the primary reason why a syphilis vaccine is not used. Additionally, antibiotics are not relevant to the discussion of vaccines (B).

In the Late 1800s,a Frenchman Observed That Individuals Who Recovered