We need an annual flu shot thanks to antigenic by influenza. Major outbreaks of the flu periodically result (with years in between these incidents) as a result of antigenic by influenza.
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(6) Antigenic shift and antigenic drift. a. Which virus may experience antigenic drift and antigenic shift? Why? b. What is the difference between antigenic shift and drift? c. How does this contribute to the need for annual vaccines?
Adi S.
You need to get a flu vaccine yearly; why? A. Type B infects many animals and thus can cause disease every year. B. Yearly; small-scale changes in the protein spikes cause antigenic shift. D. The flu vaccine elicits a poor immune response, so you have to get the same one each year.
Sanchit J.
Compare and contrast antigenic drift and antigenic shift in the context of the influenza virus. Your answer should be written in paragraph form (no lettered bullets) and include the following: definition of each term, how each occurs (in terms of molecular biology), what HA and NA are, and what effect antigenic drift and shift have on them. Additionally, discuss which one has a larger impact on the yearly influenza vaccine and why, as well as which one contributes to influenza pandemics and why.
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