The number of new cases of tuberculosis diagnosed in Country : GMAT Critical Reasoning (CR)
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# The number of new cases of tuberculosis diagnosed in Country

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Manager
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The number of new cases of tuberculosis diagnosed in Country [#permalink]

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07 Jun 2008, 12:23
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The number of new cases of tuberculosis diagnosed in Country X increased dramatically this year. The country's news media have speculated that the sharp increase in new cases is the result of the tuberculosis outbreak that occurred in neighboring Country Y last year. Health officials in Country X have therefore proposed that all visitors from Country Y must submit to a medical examination before entering Country X.

Which of the following, if true, most strongly suggests that the proposed medical examinations will not help curb the spread of tuberculosis in Country X?

a) Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis.
b) Current medical technology is not capable of detecting all carriers of tuberculosis.
c) Country X does not have the resources to examine all visitors from Country Y.
d) Tuberculosis is not spread through human contact.
e) Citizens of Country Y will not travel to Country X if the proposal is implemented.

I disagree with the OA...
If you have any questions
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Director
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Re: CR - Turbeculosis Cases [#permalink]

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07 Jun 2008, 12:57
D
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07 Jun 2008, 12:59
D. If the disease does not spred by human contact that country X's counter measure to control the disease is flawed.

The catch is that - we know that tuberculosis spreads via human contact, but this is not what the question is testing.
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Re: CR - Turbeculosis Cases [#permalink]

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07 Jun 2008, 13:03
D for me, will explain for correct.
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07 Jun 2008, 16:16
was stuck with B and D. atleast picked D.

But would like to know why not B.
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Re: CR - Turbeculosis Cases [#permalink]

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07 Jun 2008, 16:29
Conclusion: All the visitors must be examined for TB.

a) Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis. [Country Z is not mentioned in the argument – eliminate it]

b) Current medical technology is not capable of detecting all carriers of tuberculosis. [May be help in curbing TB, but does not help in completely address the issue – eliminate it]

c) Country X does not have the resources to examine all visitors from Country Y. [Does not help – eliminate it]
d) Tuberculosis is not spread through human contact. [Hold it]
e) Citizens of Country Y will not travel to Country X if the proposal is implemented. [Irrelevant]

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Re: CR - Turbeculosis Cases [#permalink]

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19 Jun 2008, 15:40
ldpedroso wrote:
The number of new cases of tuberculosis diagnosed in Country X increased dramatically this year. The country's news media have speculated that the sharp increase in new cases is the result of the tuberculosis outbreak that occurred in neighboring Country Y last year. Health officials in Country X have therefore proposed that all visitors from Country Y must submit to a medical examination before entering Country X.

Which of the following, if true, most strongly suggests that the proposed medical examinations will not help curb the spread of tuberculosis in Country X?

a) Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis.
b) Current medical technology is not capable of detecting all carriers of tuberculosis.
c) Country X does not have the resources to examine all visitors from Country Y.
d) Tuberculosis is not spread through human contact.
e) Citizens of Country Y will not travel to Country X if the proposal is implemented.

I disagree with the OA...

I chose D also - if its not spread through human contact then there's no point in testing them, as they're placing a restraing on something that is NOT spreading it.

makes me doubt myself though, since you comment that you disagree. whats the OA?
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Re: CR - Turbeculosis Cases [#permalink]

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19 Jun 2008, 20:58
Guys, I know all of you are going for D but I'd disagree.... here are my thoughts..

D says that TB is not spread through human contact, but humans can still carry the virus (or bacteria... whatever it is) ..Consider an example that TB is spread through biting of a mosquito, it bites a carrier then when it bites a healthy person the infection is transfered ..... No human contact, still TB has spread....

B on the other hand, tells that current methods of detecting the infection are not enough, so there are chances that people with TB infection will still get inside country X.

My choice is B.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 00:11
ldpedroso : could you please give the OA
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 09:24
A is the correct answer. If Country Y outbreak is the casue then other neighboring countries should also see increase incidence.

B is not correct because the questions ask if the examinations will "curb" not eliminate the spread and B assumes current medical technology will catch some buit not all carriers so it should help curb the spread.

D is not correct because human contact is irrelevant. If a carriers brings the disease to X then perhaps it is spread through the use of drinking fountations or in the air when an infected person coughs. CONTACT is not required but that does not mean that carriers cannot spread the disease in another way after entering X from Y.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:00
comebackkid wrote:
A is the correct answer. If Country Y outbreak is the casue then other neighboring countries should also see increase incidence.

B is not correct because the questions ask if the examinations will "curb" not eliminate the spread and B assumes current medical technology will catch some buit not all carriers so it should help curb the spread.

D is not correct because human contact is irrelevant. If a carriers brings the disease to X then perhaps it is spread through the use of drinking fountations or in the air when an infected person coughs. CONTACT is not required but that does not mean that carriers cannot spread the disease in another way after entering X from Y.

What if countries Y and Z are enemies and the border is sealed ..... that could be a reason for TB not spreading to Z.... or people are not moving from Y to Z becuase Z is a very poor country with militant problems, no one wants to go there ..... There is a lot of assumption in Option A..... if there was an added line that number of people visiting Z from Y is almost same as to X... then yes, but not in its current form .....
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:01
Choose C.

They can not assess all visitors from Country Y.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:12
C is not correct because you do not need to examine ALL visitors to curb the spread of TB, only some (which logically includes as few as 1 or as many as all).

Last edited by comebackkid on 21 Jun 2008, 10:19, edited 1 time in total.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:17
Answer A employs a frequenlty used reasoning structure found on the LSAT. The absence of the condition in Z, another country whcih also shares a border with Y, supports the hypothesis that Y is not the root source of problem in X. In fact, if you review BluePrint or Testmagic LSAT prep materials you will find several actual LSAT quesitons just like this one.

Last edited by comebackkid on 21 Jun 2008, 10:31, edited 1 time in total.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:30
I don't think that A is correct answer here. A is out of scope and requires too many additional assumptions to be correct.
For example,

1. The flows of visitors from country Y to X and Z were similar last year.
2. Country Z has no stricter a medical examination for visitors from Y.
3. Country Z has no stricter a medical protection of its citizens from tuberculosis.
.....

I guess D is the most suitable here.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:36
walker wrote:
I guess D is the most suitable here.

but what about things already said about "human contact" ..... may be human contact is not even required to spread the TB. it is spreading through air, water or insects .....
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:41
The correct answer need not prove conclusively. Rather, it must only "most strongly suggest"...

As a single data point A suggests why the examinations will not work. The other "assumptions" about A introduced above are not known or provided in the stem/ stimulus. So, the additional assumptions are actually out of scope not the answer choice itself.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:42
Let's get an OA here and source of the question please.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 10:47
I see that D is not airtight but the best of worse. D says the main idea that channel of transfer of tuberculosis may not be visitors, but, for instance, it may be infected water in the river that flows from country Y to country X, or imported grain, and etc.
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Re: CR - Turbeculosis Cases [#permalink]

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21 Jun 2008, 11:25

a) Country Z, which also neighbors Country Y, has not experienced an increase in cases of tuberculosis. ( NR )
b) Current medical technology is not capable of detecting all carriers of tuberculosis. ( NR )
c) Country X does not have the resources to examine all visitors from Country Y. ( it is about curbing the spread, not eradicating it, so this point doesnt matter. )
d) Tuberculosis is not spread through human contact. ( Incase Tuberculosis is not spread through human contact, the proposal is not sensible , Best Answer )
e) Citizens of Country Y will not travel to Country X if the proposal is implemented. ( NR :- Not Relevant)
Re: CR - Turbeculosis Cases   [#permalink] 21 Jun 2008, 11:25

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