Explain the terms antigenic shift and antigenic drift.

Antigenic shift and antigenic drift are two mechanisms by which viruses, particularly influenza viruses, evolve and alter their surface antigens, making it difficult for the immune system to recognize and combat them.

Antigenic drift refers to small, gradual changes in ____ ___ _________ _____ ____.
_______ _____ __________ ______ _________ ____ _______ _______ ______.
_____ __________ __________ __________ _________ _______ __________ _____ __________ _____ __________ ___.
___ ___ ___ ___ ____ _____ ____ ____ ________ _______ _______ ____.
___ ________ ____ _______ ________.
_________ _________ __________ ______ __________ _______ _______ ______ ________ ____ __________.
________ ____ ______ ___ ________ __________ ____ ___ _______ ________ _______.
_____ __________ __________ _________ _____ ____ ____ _____ ______ ____ __________.
_____ __________ __________ ____ ____ ____ __________.
____ _________ _________ ___ _____ ______ _______ ________ __________.
_______ __________ _______ __________ _________ ____ __________.
_________ ___ _________ ________ __________ ________ ______.
_________ ____ _______ ____ ___ _________ ___ _______.
______ __________ _________ ________ __________ _______ ____ ________ __________ _________ _________ _________.
__________ _______ ______ _________ ____ _________ ________ _________.
________ ____ _______ _____ _________ _______.
___ _______ ___ ______ ___ __________.
______ ____ _________ _________ __________ ____ __________ ______ _________ _________ ____ ________.
___ __________ ______ __________ ________ ____ _______.
___ _______ _________ ________ _______ ____ ____ _____ ___ ___.
_______ ________ _____ _________ ________ ______ _____.
______ ____ _____ _______ __________ _____ _______ ______ __________ _____ ____ ________.
_____ _______ _________ ___ ______ _________ _________.
Get Full Answer on WhatsApp