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. 2006 Sep 5;3(9):e337. doi: 10.1371/journal.pmed.0030337

Figure 2. Predictive Values for N. meningitidis Diagnosis.

Figure 2

PVPs and NPVs for the diagnosis of N. meningitidis serogroup A (A) and serogroup W135 (B), according to prevalence. PVP is represented by the purple line with open circles, and NPV by the blue line with filled circles.