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Lofgren's disease has been observed frequently in

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Lofgren's disease has been observed frequently in [#permalink] New post 09 Apr 2006, 19:24
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A
B
C
D
E

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Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life.

Which of the following is most strongly supported by the information provided?

A: The virus that causes Lofgren's disease cannot be transmitted to human beings by chickens.
B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
D: An animal that has been infected with the virus that causes Lofgren's disease but that has not developed symptoms cannot transmit the disease to an uninfected animal of the same species.
E: The feed that chickens and cattle are fed is probably not the only source of the virus that causes Lofgren's disease.

Any opinons? I will let you all know my answer after the discussion.

Last edited by gottodoit on 10 Apr 2006, 17:25, edited 1 time in total.
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 [#permalink] New post 09 Apr 2006, 19:57
C ?
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 [#permalink] New post 09 Apr 2006, 20:00
Its undoubtedly C
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Re: CR:Lofgren's disease [#permalink] New post 09 Apr 2006, 20:54
gottodoit wrote:
Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life.
Which of the following is most strongly supported by the information provided?
A: The virus that causes Lofgren's disease cannot be transmitted to human beings by chickens.
B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
D: An animal that has been infected with the virus that causes Lofgren's disease but that has not developed symptoms cannot transmit the disease to an uninfected animal of the same species.
E: The feed that chickens and cattle are fed is probably not the only source of the virus that causes Lofgren's disease.

Any opinons? I will let you all know my answer after the discussion.


A: way off the topic
B: a generic statement
D: assumed ( not stated in passage)
E: assumed again
C: Supported

Ans: C
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 [#permalink] New post 09 Apr 2006, 21:16
Agree with C

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 [#permalink] New post 09 Apr 2006, 23:37
one more for C.
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 [#permalink] New post 10 Apr 2006, 00:08
C it is
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 [#permalink] New post 10 Apr 2006, 09:41
Not sure but 'C'.
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 [#permalink] New post 10 Apr 2006, 14:59
Great! All C.

:P

Anyway there is no OA.

I think it's B.

My reasoning:

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
=> Why the disease is rarely observed in chicken because chickens are killed before (1 year) they (majority) show any symptoms. If we had some way to determine that the chickens are infected without knowing the symptoms, then the chances are that the cattle and chickens are equally infected by this disease.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune (safe) to the virus that causes this disease.


=> why C may not be correct (I think) because, nowhere in the passage mentioned that the chickens are IMMUNE TO the virus. It's clearly mentioned that the disease is rarely observed, that means they are not really immune to this disease.

Please correct me if I am wrong somewhere.
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 [#permalink] New post 10 Apr 2006, 15:33
I bet of C!!

Whats the OA?
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 [#permalink] New post 10 Apr 2006, 17:26
I go for C too.
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 [#permalink] New post 10 Apr 2006, 17:37
I go for B
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 [#permalink] New post 10 Apr 2006, 20:33
C for me.

Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life.
Which of the following is most strongly supported by the information provided?

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
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 [#permalink] New post 13 Apr 2006, 03:40
gottodoit wrote:
Great! All C.

:P

Anyway there is no OA.

I think it's B.

My reasoning:

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
=> Why the disease is rarely observed in chicken because chickens are killed before (1 year) they (majority) show any symptoms. If we had some way to determine that the chickens are infected without knowing the symptoms, then the chances are that the cattle and chickens are equally infected by this disease.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune (safe) to the virus that causes this disease.


=> why C may not be correct (I think) because, nowhere in the passage mentioned that the chickens are IMMUNE TO the virus. It's clearly mentioned that the disease is rarely observed, that means they are not really immune to this disease.

Please correct me if I am wrong somewhere.


B is a sweeping generalization. C stnads out IMO
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I prefer B [#permalink] New post 13 Apr 2006, 09:31
I agree with gottodoit for the answer - B.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
Explanation: In the passage, the author didn't mention anything that leads to the conclusion that chickens are immune to the virus. However, the author did mention that the disease is rare in chicken. So, this choice looks to me out of scope.

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
Explanation: Since the chickens are generally brought to the market during their first year of life and it takes one year to develop symptoms of Lofgren's disease in any animal (that includes chicken too), so there is no way to determine whether those chickens are infected with the disease, at least with the information that is available to us to analyze.

Argument:
"Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life. "
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 [#permalink] New post 13 Apr 2006, 09:37
Good discussion folks.

My bet on "B"
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 [#permalink] New post 13 Apr 2006, 11:49
My answer is 'B'.

C is out of scope, according to me.
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Re: I prefer B [#permalink] New post 13 Apr 2006, 14:48
vw01 wrote:
I agree with gottodoit for the answer - B.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
Explanation: In the passage, the author didn't mention anything that leads to the conclusion that chickens are immune to the virus. However, the author did mention that the disease is rare in chicken. So, this choice looks to me out of scope.

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
Explanation: Since the chickens are generally brought to the market during their first year of life and it takes one year to develop symptoms of Lofgren's disease in any animal (that includes chicken too), so there is no way to determine whether those chickens are infected with the disease, at least with the information that is available to us to analyze.

Argument:
"Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life. "



I chose C because in B the bolded portion is contradictory

B says there is no way but the stem says "very rarely" . So B is a sweeping generalization

Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens
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Re: I prefer B [#permalink] New post 13 Apr 2006, 15:04
trivikram wrote:
vw01 wrote:
I agree with gottodoit for the answer - B.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
Explanation: In the passage, the author didn't mention anything that leads to the conclusion that chickens are immune to the virus. However, the author did mention that the disease is rare in chicken. So, this choice looks to me out of scope.

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
Explanation: Since the chickens are generally brought to the market during their first year of life and it takes one year to develop symptoms of Lofgren's disease in any animal (that includes chicken too), so there is no way to determine whether those chickens are infected with the disease, at least with the information that is available to us to analyze.

Argument:
"Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life. "



I chose C because in B the bolded portion is contradictory

B says there is no way but the stem says "very rarely" . So B is a sweeping generalization

Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens


Stem says disease observed very rarely because "chichens are generally brought to market during their first year of life" so it's very rare that they are kept beyond the first year of their life. There is nothing wrong in B.

Had they been kept alive for more than one year (like Cows), chickens would have shown the symptom "very frequently".

Any comments!

Still I don't see any convincing point to discard B. I think my comments about C are enough to discard it!
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Re: I prefer B [#permalink] New post 13 Apr 2006, 15:12
gottodoit wrote:
trivikram wrote:
vw01 wrote:
I agree with gottodoit for the answer - B.

C: A failure to observe Lofgren's disease in commercial chicken populations is not good evidence that chickens are immune to the virus that causes this disease.
Explanation: In the passage, the author didn't mention anything that leads to the conclusion that chickens are immune to the virus. However, the author did mention that the disease is rare in chicken. So, this choice looks to me out of scope.

B: There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease.
Explanation: Since the chickens are generally brought to the market during their first year of life and it takes one year to develop symptoms of Lofgren's disease in any animal (that includes chicken too), so there is no way to determine whether those chickens are infected with the disease, at least with the information that is available to us to analyze.

Argument:
"Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens. Both cattle and chickens raised for meat are often fed the type of feed that transmits the virus that causes the disease. Animals infected with the virus take more than a year to develop symptoms of Lofgren's disease, however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life. "



I chose C because in B the bolded portion is contradictory

B says there is no way but the stem says "very rarely" . So B is a sweeping generalization

Lofgren's disease has been observed frequently in commercially raised cattle but very rarely in chickens


Stem says disease observed very rarely because "chichens are generally brought to market during their first year of life" so it's very rare that they are kept beyond the first year of their life. There is nothing wrong in B.

Had they been kept alive for more than one year (like Cows), chickens would have shown the symptom "very frequently".

Any comments!

Still I don't see any convincing point to discard B. I think my comments about C are enough to discard it!


Good point gottodoit.

But consider this

however, and chickens commercially raised for meat, unlike cattle, are generally brought to market during their first year of life

There is no gurantee that all the chicken are brought before the first year

Where as B states

"There is no way to determine whether a chicken is infected with the Lofgren's disease virus before the chicken shows symptoms of the disease. "
which is not right 'cos it is too generic.

Truly appreciate you for a very good question though
Re: I prefer B   [#permalink] 13 Apr 2006, 15:12
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