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# A certain viral infection is widespread among children

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02 Apr 2015, 07:09
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A certain viral infection is widespread among children, and about 30 percent of children infected with this virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear infections often clear up.

Which one of the following most helps to explain the success of the treatments with antibiotics?

(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.

(B) Children infected with the virus are particularly susceptible to bacteria that infect the middle ear.

(C) Many children who develop middle ear infections are not infected with the virus.

(D) Most viral infections are more difficult to treat than are most bacterial infections.

(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

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02 Apr 2015, 07:25
souvik101990 wrote:
A certain viral infection is widespread among children, and about 30 percent of children infected with this virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear infections often clear up.

Which one of the following most helps to explain the success of the treatments with antibiotics?

(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.

(B) Children infected with the virus are particularly susceptible to bacteria that infect the middle ear.

(C) Many children who develop middle ear infections are not infected with the virus.

(D) Most viral infections are more difficult to treat than are most bacterial infections.

(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

Pre-thinking: Maybe the ear infection is caused by a bacteria and hence responds to anti-biotics, which are known to kill bacteria.

A. We dont really care how antibiotics work and the characteristics of each since based on the information in the stem, we cant figure out how our subject antibiotic would fit into this scheme. Our antibiotic might just fall into the former option, leaving us at bay. Incorrect

B. Perfect. So while the viral infection is caused by a virus, which the anti-biotic cannot treat, this viral infection makes the children more likely to form a bacterial infection in the middle ear. Therefore, the middle ear infection is not because of a virus but because of bacteria. This is the reason why the antibiotic worked. Correct

C. This doesnt tell us why the children were cured of the antibiotic. So it wasnt a virus that caused the infection. It could be a worm that did, and if so why would antibiotics, which cures bacteria, work on such an infection. Incorrect.

D. Rhetorical statement which has no link to our argument. We are assuming that the ear infection is because of a virus. Bacterial infection doesnt come into the picture. Irrelevant. Incorrect

E. OFS. Irreevant. Incorrect.

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08 Oct 2016, 05:49
Picked the correct answer (B) but couldn't E be correct as well?

(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections. Which means that even children not infected by the virus can develop middle ear infections. So maybe this virus has nothing to do with middle ear infections but with another reason.
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Re: A certain viral infection  [#permalink]

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17 Mar 2017, 01:30
nahid78 wrote:
A certain viral infection is widespread among children, and about 30 percent of children infected with the virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear infections often clear up.

Which one of the following most helps to explain the success of the treatments with antibiotics?

(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.
(B) Children infected with the virus are particularly susceptible to bacteria that infect the middle ear.
(C) Many children who develop middle ear infections are not infected with the virus.
(D) Most viral infections are more difficult to treat than are most bacterial infections.
(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

The link ideas in passage are:
(1) Virus caused an infection in children => 30% of children had middle ear infections.
(2) The antibiotics treat bacterial only and have no effect on virus.
(3) However, the antibiotics treat middle ear infections in (1) well.

The correct answer is the one sets a connection between these facts.

(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.
Irrelevant as opposed to (2)

(B) Children infected with the virus are particularly susceptible to bacteria that infect the middle ear.
Correct. If children were infected by virus in (1), then this is a good condition for bacteria develop in the middle ear. That is the reason why the antibiotics could treat middle ear infections well.

(C) Many children who develop middle ear infections are not infected with the virus.
Irrelevant as opposed to (3)

(D) Most viral infections are more difficult to treat than are most bacterial infections.
Irrelevant. This choice can't explain what happened in (3)

(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections.
Irrelevant.
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22 Mar 2017, 21:00
Merging topics. Please, search questions before posting.
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22 Mar 2017, 23:22
A certain viral infection is widespread among children, and about 30 percent of children infected with this virus develop middle ear infections. Antibiotics, although effective in treating bacterial infections, have no effect on the virus. Yet when middle ear infections in children infected with the virus are treated with antibiotics, the ear infections often clear up.

Which one of the following most helps to explain the success of the treatments with antibiotics?

(A) Although some types of antibiotics fail to clear up certain infections, other types of antibiotics might provide effective treatment for those infections.

There is no discussion on types of antibiotics. Irrelevant.

(B) Children infected with the virus are particularly susceptible to bacteria that infect the middle ear.
It suggests real cause of infection is bacteria. That's why antibiotics cure this- able to join the dots of reasoning.
Also, it suggest infected with the virus are more prone to the bacteria. Right reasoning.
(C) Many children who develop middle ear infections are not infected with the virus.
Can not be concluded.

(D) Most viral infections are more difficult to treat than are most bacterial infections.
No comparison.

(E) Among children not infected with the virus, fewer than 30 percent develop middle ear infections.

No statistics on "children not infected with the virus"
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Re: A certain viral infection is widespread among children &nbs [#permalink] 22 Mar 2017, 23:22
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