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A new government policy has been developed to avoid many

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A new government policy has been developed to avoid many [#permalink] New post 26 Nov 2012, 06:43
00:00
A
B
C
D
E

Difficulty:

(N/A)

Question Stats:

83% (03:01) correct 17% (02:57) wrong based on 33 sessions
A new government policy has been developed to avoid many serious cases of influenza. This goal will be accomplished by the annual vaccination of high-risk individuals: everyone 65 and older as well as anyone with a chronic disease that might cause them to experience complications from the influenza virus. Each year’s vaccination will protect only against the strain of the influenza virus deemed most likely to be prevalent that year, so every year it will be necessary for all high-risk individuals to receive a vaccine for a different strain of the virus.

Which one of the following is an assumption that
would allow the conclusion above to be properly drawn?

(A) The number of individuals in the high-risk
group for influenza will not significantly
change from year to year.

(B) The likelihood that a serious influenza epidemic
will occur varies from year to year.

(C) No vaccine for the influenza virus protects
against more than one strain of that virus.

(D) Each year the strain of influenza virus deemed
most likely to be prevalent will be one that had
not previously been deemed most likely to be
prevalent.

(E) Each year’s vaccine will have fewer side effects
than the vaccine of the previous year since the
technology for making vaccines will constantly
improve.

Answer after some discussion...
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Re: A new government policy has been developed to avoid many... [#permalink] New post 26 Nov 2012, 06:50
I chose answer C - but to be honest, it was a tossup for me between C & D. Both seem correct to me.

The conclusion is that the high-risk group will need to be vaccinated every year.

Answer C seems like a necessary assumption - as if some vaccines protected against multiple strains of the virus, annual vaccination may not be necessary.

Likewise, answer D seems like a necessary assumption - as if the same strain broke out year after year, the high risk group would already have been vaccinated against it, mitigating the need for repeat vaccination.
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Re: A new government policy has been developed to avoid many... [#permalink] New post 26 Nov 2012, 07:23
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Hi Grace,

I think the Answer is likely to be D. Whilst both C and D are assumptions, answer C has already been mentioned in the question Each year’s vaccination will protect only against the strain of the influenza virus deemed most likely to be prevalent that year

Hope that helps.

Happy to run through the rest of the options if that helps.

Cheers,

James
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Re: A new government policy has been developed to avoid many... [#permalink] New post 26 Nov 2012, 08:00
plumber250 wrote:
Hi Grace,

I think the Answer is likely to be D. Whilst both C and D are assumptions, answer C has already been mentioned in the question Each year’s vaccination will protect only against the strain of the influenza virus deemed most likely to be prevalent that year

Hope that helps.

Happy to run through the rest of the options if that helps.

Cheers,

James


James -

Thanks! Your explanation was very helpful. I was missing that detail in the original paragraph that all vaccinations would only be protecting against a single strain. Should have gone back and read it again! Anyhow, many thanks for the help.

All the best -
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Joined: 03 Sep 2012
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Kudos [?]: 78 [0], given: 31

Re: A new government policy has been developed to avoid many... [#permalink] New post 26 Nov 2012, 08:12
The premise, goes on to describe the government policy and how the vaccine will be administered.

The conclusion is -


so every year it will be necessary for all high-risk individuals to receive a vaccine for a different strain of the virus.


The question stem reads:
Quote:
Which one of the following is an assumption that
would allow the conclusion above to be properly drawn?


The relationship can be represented as P (premise) + A(assumption) ---> Conclusion; Which means we are in search of an assumption which will ENABLE the conclusion to become logical, therefore the test maker concedes that their are some apparent HOLES in the argument. At this point we can try to paraphrase or move onto the answer choices..

Lets keep the Premise and conclusion in mind so that we can attack the answer choices:

(A)

The number of individuals in the high-risk
group for influenza will not significantly
change from year to year.


If we add this assumption to the premise provided, do we get a logical conclusion? Even if the no. of people in the group do not change or change it will have no bearing on whether those people would need or not need the vaccine next year. WE CAN SAFELY move on ..

(B)

Quote:
The likelihood that a serious influenza epidemic
will occur varies from year to year.


The likelihood of the virus occurring has nothing to do with the repeated inoculation of a different type of vaccine (strain).. Even if the incidence of influenca epidemic drops significantly we have no indication from either the passage or the answer choice which suggests that the government will roll back its decision to vaccinate people. The argument still remains in the same LOGICAL position as it existed in the original passage (we are to strengthen this logical position of the argument through the introduction of an assumption)

(C)

Quote:
No vaccine for the influenza virus protects
against more than one strain of that virus


A Basic requirement in any assumption question is that the assumption must be an ADDITIONAL PREMISE. This is a craftily worded paraphrase of an all ready mentioned premise : " Each year’s vaccination will protect only against the strain of the influenza virus" , Therefore this FAILS the test ( P + A ---> Conclusion)

(D)

Quote:
Each year the strain of influenza virus deemed
most likely to be prevalent will be one that had
not previously been deemed most likely to be
prevalent.


This is the correct answer. The assumption fills one major HOLE in the argument (something which some may be able to paraphrase before reviewing the answer choices). If someone made this argument to me (passage). I could rebut by saying " What if you have 2-3 consecutive years where every year a similar strain will be considered dangerous" " would your conclusion not be FALSE then?" If you wanted to WIN the argument, you can rebut by saying " Each year the strain of influenza virus deemed most likely to be prevalent will be one that had not previously been deemed most likely to be prevalent. "..And you will win the argument :-)

This meets the P + A --> Conclusion test as it makes the overall argument more logical.

(E)

Quote:
Each year’s vaccine will have fewer side effects
than the vaccine of the previous year since the
technology for making vaccines will constantly
improve.


This answer choice is out of scope, as it goes on a different tangent altogether and is the easiest one to eliminate because of that !

Hope this helps

OA : D

This question becomes so much easier, if we take a bit of time to write down the premise and conclusion on our scratch pads before we begin searching for the correct assumption ( this way we can easily realize that C is a rewording of a pre existing premise so that we can avoiding falling into the trap)...
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Re: A new government policy has been developed to avoid many...   [#permalink] 26 Nov 2012, 08:12
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