Mr james an 80 year old man has approach into the clinic, Ask an Expert

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Mr James an 80 year old man has approach into the clinic grumbling this morning about having to receive a flu shot every year. You know that viruses have a high mutation rate change genetically rapidly, which results in the appearance of new proteins on the flu virus's "coat". Explain how does this help define why Mr James needs to get a flu shot each year?

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Category:- Chemistry
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