Attenuated vaccines are: A) Live but with reduced virulence B) Dead C) Both A an

Question

Attenuated vaccines are: A) Live but with reduced virulence B) Dead C) Both A and B D) Neither a nor b! (Not correct answer) Whole agent and subunit vaccines could be which of the following? A) Inactivated vaccine B) Attentuated vaccines C) Toxoid vaccines D) All of the above Substances that increase the antigenicity of a vaccine are called? A) Boosters B) Co-antigens C) Toxoids D) Adjuvants Toxoid vaccines have high infection-producing capabilities. A) true B) false C) Both A and B D) None of the above Which of the following is a substantiated vaccine safety issue? A) Anaphylactic shock B) Residual virulence C) Toxicity D) All of the above Direct injection of antibodies to treat a disease leads to what type of immunity? A) Indirect immunity B) Active immunity C) Passive immunity D) Direct immunity Serum used to provide antibodies to treat a disease is called: A) Anticoagulant B) Antiserum C) Anti-antibody D) Adjuvant Which of the following is

Explanation / Answer

73- A) live but reduced virulence.

This vaccines produce better immune response than from inactivated vaccine( dead vaccine) as inactivated vaccine. produces very weak response.

So B is wrong because attenuated vaccines are live.

74-D) all of the above.

Whole agent can be attenuated or inactivated. And subunit vaccines are part of microorganism used to elicit immune response that could be a protein or other toxic part of the microorganism.

75)-D) adjuvants.

They are used to increase the antibody production by attaching with the vaccine. They do not elicit the response by themselves but when attached with the vaccine they increase the immune response by increasing the antigenicity.

A is wrong because boosters are re exposure of antigen to the body to memorize the antigen by body.

Co-antigen are attached to agents which are non antigenic themselves but vaccine is not non antigenic. So Co antigens are not attached to the vaccine.

C is wrong because Toxoid are weakened vaccine and they do not increase antigenicity.

76-B) false

Because Toxoid are often weakened vaccine and they often are associated with adjuvants to elicit immune response.

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