Persons in an auditorium may have been exposed to a disease.If they are infected,it is crucial that they receive immediate treatment and not take the disease home to their families.Which of the following characteristics would be most important to consider when selecting the screening test to be used?

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Because it is most important to identify every case,the sensitivity of the test is crucial.High sensitivity is needed when early treatment is important and when identification of every case is important.A negative predictive value is the proportion of persons with a negative test who are actually disease free.A positive predictive value is the proportion of persons with a positive test who actually have the disease,interpreted as the probability that an individual with a positive test has the disease.Specificity indicates how accurately the test identifies those without the condition or trait.

Persons in an Auditorium May Have Been Exposed to a Disease.If