Which of the Following Is True of an Antigenic Drift

question 1

Multiple Choice

Which of the following is true of an antigenic drift?

• A) Small changes in viral surface proteins are known as an antigenic drift and result in decreased vaccine effectiveness.
• B) When the virus undergoes a major change in its surface proteins such as hemagglutinin and neuraminidase, it 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.