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For years, doctors have been trying to find a cause for Chro

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For years, doctors have been trying to find a cause for Chronic Fatigue Syndrome (CFS). The devastating illness tends to strike healthy and fairly active individuals with no other history of medical problems or conditions. Recently, doctors in California have found that over 70% of those individuals diagnosed with CFS are infected with a rare enterovirus that is almost never found in the healthy population. As a result, they believe that this enterovirus is the primary cause of many cases of CFS.

Which if the following is an assumption upon which the doctors’ theory depends?

A) There are not other viruses that may cause Chronic Fatigue Syndrome.
B) The rare enterovirus was present at the onset of these patients’ Chronic Fatigue Syndrome.
C) The laboratory technicians analyzing the presence of the enterovirus in the patients’ blood and tissues did not make some mistakes in their analysis.
D) The severity of the symptoms among the patients diagnosed with CFS does not vary widely.
E) The rare enterovirus is commonly seen in patients that are severely ill.

OA B

Source: Veritas Prep

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Option A - INCORRECT.
Over the years researchers have been unable to single out any other viruses that may cause Chronic Fatigue Syndrome but there have been suspicious viruses.

Option B - CORRECT.
It can be categorically said that, this rare Enterovirus was present at the onset of these patients’ Chronic Fatigue Syndrome, because enteroviruses are viruses that can be transmitted from one person to another via direct contact with virus shed from the gastrointestinal or upper respiratory tract. However, there is every tendency for this virus to strike healthy and fairly active individuals with no other history of medical problems or conditions if one person in a family is infected.

Option C - INCORRECT.
This option maybe true since the virus is a transmittable virus. Therefore, laboratory technicians analyzing the presence of the enterovirus in the patients’ blood and tissues did not make some mistakes in their analysis more reviews is needed for certainty.

Option D - INCORRECT.
The severity of the symptoms among the patients diagnosed with CFS does not vary widely because the virus enterovirus has same symptoms on infected patients.

Option E - INCORRECT.
This option is partially true. The rare enterovirus is not only diagnosed in patients that are severely ill alone, even people who tends to healthy can be infected because it is transmittable.

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