Table 1.

Categories of patients, samples tested in this study, and PCR results

Category (no. of samples)No. of patientsSample source(s) (no. of samples)aCultureDirect smearAntigen detectionPCRNo. of samples (patients)
++NDb+ND+Positive by PCRNegative by PCR
1 (33)27CSF (22)22 985481012132 (26)1 (1)
Serum (7)7 71247
PF (3)3 111123
AF (1)1 111
2 (20)20CSF (13)131121311217 (17)3 (3)
Serum (7)77725
3 (147)78CSF (78)7831471761483051 (35)96 (43)
Serum (69)69204915544821
4 (10)10CSF (10)10c 10101010 (10)
5 (15)15CSF (15)1515151411 (1)14 (14)
 Total15022518233d, 10c 77211275332140124101101 (79)124 (71)
  • a Samples tested were CSF (n = 138), serum (n = 83), pericardial fluid (PF; n = 3), and articular fluid (AF; n = 1).

  • b ND, not determined.

  • c These samples were positive by culture for other bacterial species.

  • d These samples were positive by culture forN. meningitidis.