A Study Was Done to Evaluate a New Serologic Screening

A study was done to evaluate a new serologic screening test for human immunodeficiency virus (HIV) infection.  A total of 1000 people were randomly selected from the population, screened using the new test, and screened again using the gold standard (i.e., Western blot analysis) to determine true infection state.  The findings are as follows:
What is the sensitivity of this new serologic screening test?

A) 140/180
B) 140/200
C) 60/820
D) 60/200
E) 180/1000

Correct Answer:

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