Question

question 17
1 pts
a young mother is reluctant to vaccinate her new baby. she doesnt get how you become immune to a disease without actually getting the disease. she says she just doesnt understand how vaccines work.
as her babys nurse, what will you tell her?
vaccines are all made of similar pathogens that the body already knows how to fight but cause you to become immune to the more serious disease.
scientists really dont understand what is actually happening at the cellular level with vaccinations but they believe that vaccines fight off serious illnesses.
the vaccines will give your baby the disease but its only a mild version of it and then shell be protected from a more serious infection later.
vaccines are made of only part of the pathogen so they cannot cause the disease but they can \teach\ your babys immune system how to fight the disease.

Explanation:

Vaccines are made from weakened or inactivated pathogens or parts of pathogens. When a baby is vaccinated, the immune system recognizes these as foreign. It then mounts an immune response to destroy them. During this process, the immune system creates memory cells. These memory cells "remember" the pathogen. If the baby is later exposed to the actual disease - causing pathogen, the immune system can quickly recognize and fight it off, preventing or reducing the severity of the disease.

• Option 1 is incorrect because vaccines are made from the actual pathogen (in a weakened or inactivated form or as parts), not just similar pathogens.
• Option 2 is wrong as scientists understand the cellular - level mechanisms of vaccinations well. Vaccines work by stimulating the immune system.
• Option 3 is incorrect because vaccines do not give the baby the disease (except in very rare cases for some live - attenuated vaccines, but even then, it is a controlled exposure and not the full - blown disease).
• Option 4 is correct as vaccines are made of only part of the pathogen (or inactivated/weakened whole pathogen) and they stimulate the immune system to learn to fight the disease without causing the full - blown disease.

Answer:

D. Vaccines are made of only part of the pathogen so they cannot cause the disease but they can "teach" your baby's immune system how to fight the disease.