Question

question 9
1 pts
a person is given an attenuated antigen as a vaccine. when the person asks what was given in the vaccine, how should the nurse respond? the antigen is:

• alive, but less infectious.
• mutated, but highly infectious.
• normal, but not infectious.
• inactive, but infectious.

question 10
1 pts
a nurse recalls that an example of an immune - complex - mediated disease is:

• bronchial asthma.
• contact dermatitis.
• serum sickness.
• rheumatoid arthritis.

Explanation:

Question 9

An attenuated antigen in a vaccine is a live pathogen that has been weakened, so it is alive but less infectious (to stimulate immunity without causing severe disease). The other options are incorrect: "mutated, but highly infectious" is wrong as attenuated is less infectious; "normal, but not infectious" describes inactivated, not attenuated; "inactive, but infectious" is contradictory.

Immune - complex - mediated diseases involve the formation of immune complexes (antigen - antibody complexes) that deposit in tissues. Serum sickness is a classic example of an immune - complex - mediated disease. Bronchial asthma is a type I hypersensitivity, contact dermatitis is type IV, and rheumatoid arthritis is an autoimmune disease with complex mechanisms but not a typical immune - complex - mediated disease in the same way as serum sickness.

Answer:

A. alive, but less infectious.

Question 10