Volume 9, Number 8—August 2003
Perspective
Detecting Bioterror Attacks by Screening Blood Donors: A Best-Case Analysis
Table 2
False-alarm rates with test specificities as showna
Specificity (s) | Annual false-alarm rate (FAR) |
---|---|
0.9 |
1,390,000 |
0.99 |
139,000 |
0.999 |
13,900 |
0.9999 | 1,390 |
aIf one assumes 13.9 million annual blood donations tested, an average of one bioterror attack per year that infects 1,000 persons with a noncontagious agent, and a 1-month response and recovery period during which infected donations continue to arrive.