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Scientists recently documented that influenza spreads around the world

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Scientists recently documented that influenza spreads around the world  [#permalink]

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New post 04 Dec 2017, 07:48
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Scientists recently documented that influenza spreads around the world more efficiently in the modern era due to commercial air travel. Symptoms of a pandemic-level flu are severe enough that the ill would likely cancel or reschedule air travel, but an infected person can travel across the globe before the first signs appear. Further, if symptoms develop while someone is still on a plane, the infected person's cough can spread the virus easily in the enclosed and closely packed environment.

Which of the following would best minimize the role air travel can play in the spread of influenza during a pandemic?
(A) installing air filtration systems in the planes to kill any flu virus particles flowing through the filters
(B) requiring air travelers to receive flu vaccinations far enough in advance of the trip to provide protection against the disease
(C) refusing to allow children, the elderly, or others who are especially vulnerable to flu to travel by air during a pandemic
(D) requiring all air travelers to wash their hands before boarding a plane
(E) conducting medical examinations during the boarding process to weed out passengers with flu symptoms

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Re: Scientists recently documented that influenza spreads around the world  [#permalink]

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New post 04 Dec 2017, 13:06
Went with B, for the following reason.

A) installing air filtration systems in the planes to kill any flu virus particles flowing through the filters. But happens if the infected person is already in the plane and starts coughing ?
(B) requiring air travelers to receive flu vaccinations far enough in advance of the trip to provide protection against the disease. This will ensure safety.
(C) refusing to allow children, the elderly, or others who are especially vulnerable to flu to travel by air during a pandemic. No mention of kids or elders
(D) requiring all air travelers to wash their hands before boarding a plane. We don't know that, not mentioned.
(E) conducting medical examinations during the boarding process to weed out passengers with flu symptoms. We know the symptoms takes long to appear.
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Re: Scientists recently documented that influenza spreads around the world  [#permalink]

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New post 06 Sep 2018, 07:44
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souvonik2k wrote:
Scientists recently documented that influenza spreads around the world more efficiently in the modern era due to commercial air travel. Symptoms of a pandemic-level flu are severe enough that the ill would likely cancel or reschedule air travel, but an infected person can travel across the globe before the first signs appear. Further, if symptoms develop while someone is still on a plane, the infected person's cough can spread the virus easily in the enclosed and closely packed environment.

Which of the following would best minimize the role air travel can play in the spread of influenza during a pandemic?
(A) installing air filtration systems in the planes to kill any flu virus particles flowing through the filters
(B) requiring air travelers to receive flu vaccinations far enough in advance of the trip to provide protection against the disease
(C) refusing to allow children, the elderly, or others who are especially vulnerable to flu to travel by air during a pandemic
(D) requiring all air travelers to wash their hands before boarding a plane
(E) conducting medical examinations during the boarding process to weed out passengers with flu symptoms


Official solution :

58. (B). You are presented with a paragraph of premises and asked to resolve the problem they present: how to
minimize the spread of flu via air travel. The correct answer will need to rely specifically on the premises and will not
require you to make any inferences or assumptions.
(A) The passage states that the infection can be spread by coughing. The flu virus, therefore, can reach the other
passengers in the “closely-packed environment” before it enters any filters that might kill the virus.
(B) CORRECT. Vaccines provide significant protection against developing the virus (not 100% protection, but you
are asked to “minimize” the impact of air travel, not eliminate it entirely). If all passengers are vaccinated against the
virus, many of those who otherwise would have developed the disease will not, and, therefore, won’t spread it to
others.
(C) Anyone can contract the virus and subsequently spread it; the mentioned populations are merely “especially
vulnerable” to it. Infected people traveling to another place can infect children, senior citizens, and others who have
stayed in their home regions.
(D) The passage states that the infection can be spread by coughing; while it may be true that the virus can also spread
via hand contact, this information is not stated in the passage.
(E) The passage states that people who develop symptoms before travel begins likely would not make the trip; weeding
out those with observable symptoms, then, won’t “minimize” the role of air travel because there aren’t that many
people in this category. The larger danger is those who may be infected but have not yet developed symptoms.
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Re: Scientists recently documented that influenza spreads around the world  [#permalink]

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New post 06 Sep 2018, 10:07
Option B

(A) installing air filtration systems in the planes to kill any flu virus particles flowing through the filters -- virus can spread in the closed environment but the medium is not specified. Eliminate
(B) requiring air travelers to receive flu vaccinations far enough in advance of the trip to provide protection against the disease -- Flu vaccination in advance can prevent flu. Keep
(C) refusing to allow children, the elderly, or others who are especially vulnerable to flu to travel by air during a pandemic -- Irrelevant. Answer is specific while the passage doesn't specify anything about who will be more vulnerable
(D) requiring all air travelers to wash their hands before boarding a plane -- Irrelevant. Similar to (A). Eliminate
(E) conducting medical examinations during the boarding process to weed out passengers with flu symptoms -- it's mentioned that a person can travel across the globe even before first signs of infection appear. Eliminate

Only (B) makes sense.

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Re: Scientists recently documented that influenza spreads around the world &nbs [#permalink] 06 Sep 2018, 10:07
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Scientists recently documented that influenza spreads around the world

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