Question

What is the difference between antigenic drift and antigenic shift in influenza viruses?

Answer 1

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❍Antigenic Drift and Shift With the Flu Virus. Influenza strains are constantly mutating. Small changes to the genetic makeup of influenza strains are referred to as antigenic drift, while a major change is called antigenic shift.

❍When the flu strain mutates, our immune system recognizes it as a new virus.

Answer 2

Explanation :

❍Antigenic Drift and Shift With the Flu Virus. Influenza strains are constantly mutating. Small changes to the genetic makeup of influenza strains are referred to as antigenic drift, while a major change is called antigenic shift.

❍When the flu strain mutates, our immune system recognizes it as a new virus.

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