GMAT Practice Question Set #18 (Question 52-54)

Critical Reasoning Question #52: Nasal Spray for Influenza Vaccinations  
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Vaccines against influenza are generally administered through injections. Children are rarely given injections because parents fear for the pain their children will undergo. Consequently, the vaccination is done mostly on adults who are at risk of serious complications from influenza. Now, a new vaccine in the form of a nasal spray suitable for children has been developed. The benefit of vaccinating children using the spray is questionable because children don't typically develop serious complications from influenza and, therefore, there would not be much of a public health benefit from the widespread vaccination of children using the nasal spray.

Which of the following is an assumption on which the argument depends?


Injectable vaccines are generally affordable for all adults.


The nasal spray vaccine can be used safely on any person who has received an injectable vaccine.


The nasal spray vaccine is actually more effective for adults than the injectable vaccine.


The mechanism of the vaccine is the same for the injectable vaccine as for the nasal spray vaccine.


Adults do not contract influenza primarily from children who have influenza.

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