Answered

Which of the following explains why people need to get a flu shot each year?
Antibodies for the flu virus only last for one year.
The flu virus eventually breaks down the vaccine.
The flu virus is constantly mutating and changing.
There are not enough antibodies in the vaccine to kill the entire virus.



Answer :

GinnyAnswer

Final answer:

The need for yearly flu shots is primarily driven by the rapid mutation of the influenza virus, requiring new vaccines to address evolving strains.


Explanation:

The main reason for needing a flu shot each year is due to the constant mutation of the influenza virus. The flu virus mutates rapidly, making it challenging for the immune system to recognize and fight off new strains. This necessitates the development of a new flu vaccine annually to protect against the current prevalent strains.


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