Differentiate Between Antigenic Drift and Antigenic Shift,and Select the True

question 31

Multiple Choice

Differentiate between antigenic drift and antigenic shift,and select the true statement.

• A) Small changes in viral surface proteins are known as an antigenic drift and result in decreased vaccine effectiveness. When the virus undergoes a major change in its surface proteins such as hemagglutinin and neuraminidase, this is considered an antigenic shift.
• B) Small changes in viral surface proteins are known as an antigenic shift and result in decreased vaccine effectiveness. When the virus undergoes a major change in its surface proteins such as hemagglutinin and neuraminidase, this is considered an antigenic drift.
• C) Antigenic drift can prevent the antibody from recognizing the organism if exposure reoccurs.
• D) None of these are correct.

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Definitions:

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