What is one reason that influenza vaccines must be administered every year, while for some other diseases (like measles), one vaccination provides lifetime immunity? Only one surface protein on influenza virus must evolve to produce escape variants Measles has never occurred as frequently in the human population as influenza The measles virus is targeted by the innate immune system The human immune system recognizes PAMPS for measles but not influenza

What is one reason that influenza vaccines must be administered every year, while for some other diseases (like measles), one vaccination provides lifetime immunity? Only one surface protein on influenza virus must evolve to produce escape variants Measles has never occurred as frequently in the human population as influenza The measles virus is targeted by the innate immune system The human immune system recognizes PAMPS for measles but not influenza

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter12: Body Defenses

Section: Chapter Questions

Problem 2TAHL

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