What is the main reason for that every year another subtype of vaccine is recommended against seasonal flu?Because people travel a lot around the world.Because the main flu virus’s chemical composition is changing typically every year.Because we can only guess at the actual chemical composition of the main flu virus type.Because it increases the profit of pharmaceutical companies.None of the other answers is correct.
Question
What is the main reason for that every year another subtype of vaccine is recommended against seasonal flu?Because people travel a lot around the world.Because the main flu virus’s chemical composition is changing typically every year.Because we can only guess at the actual chemical composition of the main flu virus type.Because it increases the profit of pharmaceutical companies.None of the other answers is correct.
Solution
The main reason a different subtype of vaccine is recommended against the seasonal flu each year is because the main flu virus's chemical composition typically changes every year. This phenomenon is known as antigenic drift. The flu virus is able to mutate over time, which can lead to changes in the proteins on the surface of the virus. These proteins are what our immune system recognizes and responds to. If these proteins change, our immune system may not recognize the virus, making the previous year's vaccine less effective. Therefore, scientists study flu virus samples collected from around the world in order to predict which strains will be most prevalent each year and to formulate the vaccine accordingly.
Similar Questions
Why do we need a new flu vaccine every year?Group of answer choicesThis is a myth, we only need to get the flu shot once in our lifetime.Getting the flu shot every year will prevent the disease from becoming endemic in the U.S.The virus changes rapidly so that the antibodies we grow for one variation will no longer be effective at killing the new variant of the virus.Only vulnerable populations (e.g., the elderly, immunocompromised individuals) need the flu shot every yearQuiz saved at 2:05pm Submit QuizQuestionsAnsweredQuestion 1AnsweredQuestion 2AnsweredQuestion 3AnsweredQuestion 4AnsweredQuestion 5AnsweredQuestion 6AnsweredQuestion 7Haven't Answered YetQuestion 8Time Running:Hide TimeAttempt due: Oct 23 at 11:59pm54 Minutes, 26 Seconds
Explain why a new vaccine is made for Influenza each year?
Why are you supposed to get a new flu shot every year?ANSWERThe flu vaccine confers lifelong immunity.The vaccine composition is not altered from year to year.The RNA genome of influenza mutates frequently, causing minor changes. This is referred to as antigenic drift.Influenza viruses may undergo a major genetic reassortment that dramatically changes HA and NA spikes, called antigenic shift.
Question 10 of 10Which idea is explicitly stated in the article "What a Bad Flu Season Could Cost the US Economy"?A.Yearly flu outbreaks have a negative effect on the US economy.B.The flu vaccine is not reliable enough to be worthwhile.C.Vaccines will get more effective with future scientific advancements.D.When people get the flu, they feel utterly miserable.SUBMITarrow_backPREVIOUS
The influenza and SARS-CoV-2 viruses have become extremely prevalent in the human population. Many people receive vaccines yearly to help prevent symptoms or infections. What is the role of the vaccine to help fight off a viral infection?Select one:a.The vaccine infects the host cell and causes the cells to lyse.b.The vaccine stimulates the production of antibodies for a specific virus.c.The vaccine creates more white blood cells.d.The vaccine engulfs the virus once it enters the body.
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