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Salmonella is a food-borne microorganism that can cause intestinal ill

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anandnk
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Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink] New post   Updated on: 14 Feb 2020, 05:59
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Salmonella is a food-borne microorganism that can cause intestinal illness. The illness is sometimes fatal, especially if not identified quickly and treated. Conventional Salmonella tests on food samples are slow and can miss unusual strains of the microorganism. A new test identifies the presence or absence of Salmonella by the one piece of genetic material common to all strains. Clearly, public health officials would be well advised to replace the previous Salmonella tests with the new test.

Which one of the following, if true, most substantially weakens the argument?


(A) The new test identifies genetic material from Salmonella organisms only and not from similar bacteria.

(B) The new test detects the presence of Salmonella at levels that are too low to pose a health to people.

(C) Salmonella is only one of a variety of food-borne microorganism that can cause intestinal illness.

(D) The new test has been made possible only recently by dramatic advances in biological science.

(E) Symptoms of Salmonella poisoning are often mistaken for those of other common intestinal illness.
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B

Originally posted by anandnk on 05 Jan 2004, 21:11.
Last edited by Bunuel on 14 Feb 2020, 05:59, edited 1 time in total.
Renamed the topic and edited the question.
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Re: Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink] New post   05 Jan 2004, 22:24
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B, I will go with the family as well. If the new test detects the level of salmonella at levels too low to pose a threat, then it's utility will be reduced as many food products, otherwise unharmful, could be recalled uselessly
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Re: Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink] New post   04 Dec 2019, 02:38
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nightblade354 wrote:
OA added and bumping for further discussion



Pre-thinking

The argument describes salmonella and the current tests used to identify its presence in food. Such tests are slow and sometimes they don't identify the presence of salmonella in foods. Another test, although, seems to be able to identify a strain that is common to all foods in which salmonella is present.

Falsification scenario: what if such strain is also present in foods that are not dangerous for the human health? Clearly the argument would break if such scenario were true.

Assumption: The strain spotted is common only to food in which salmonella is present

POE:
We can see how options C,D and E are irrelevant.
Option A is as well irrelevant because we are not concerned with other types of bacterias.
Option B states that an undesired category of food is also detected by the test. Such undesired category is represented by all the food that contains a little trace of salmonella that is not dangerous to human health.
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Re: Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink] New post   04 Dec 2019, 20:30
The public health system is advised to adopt the new test because it is claimed to be good .. if we want to weaken that we have to find a choice that tells the new test is not so good .. B says that the test gives out false positives which is not a good thing given public health system will be using it and more number ppl will be diagnosed with a salmonella even through they have minor traces

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Re: Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink] New post   08 Jun 2021, 08:01
anandnk wrote:
Salmonella is a food-borne microorganism that can cause intestinal illness. The illness is sometimes fatal, especially if not identified quickly and treated. Conventional Salmonella tests on food samples are slow and can miss unusual strains of the microorganism. A new test identifies the presence or absence of Salmonella by the one piece of genetic material common to all strains. Clearly, public health officials would be well advised to replace the previous Salmonella tests with the new test. .


Which one of the following, if true, most substantially weakens the argument?

Summary

Logical Structure : Salmonella : food-borne microorganism --> intestinal illness --> Fatal, If not identified early.
Salmonella tests(Existing) :Slow and Miss some strains.
New Salmonella test uses new technique, using genetic mat.., can identify all the common strains.

Conclusion : Hence PHO need to replace this new test with the old ones to detect Salmonella.


Pre Thinking :dazed
We know this new test is better than the old one, but what about its result time.(Slow/Fast).




(A) The new test identifies genetic material from Salmonella organisms only and not from similar bacteria. Irrelevant, Con. is about Salmonella detection only.

(B) The new test detects the presence of Salmonella at levels that are too low to pose a health to people.
If that is the case we might need to discard food unnecessarily as it won't pose an issue. Hence PHO might not use it. But this might not be a best weaken choice, So let us check other options.

(C) Salmonella is only one of a variety of food-borne microorganism that can cause intestinal illness. Irrelevant, Same reason as option A

(D) The new test has been made possible only recently by dramatic advances in biological science. OFS

(E) Symptoms of Salmonella poisoning are often mistaken for those of other common intestinal illnessOFS

Hence I will pick B.
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Re: Salmonella is a food-borne microorganism that can cause intestinal ill [#permalink]
08 Jun 2021, 08:01
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