TABLE 2.

Performance of culture and mPCR for Streptococcus pneumoniae and Haemophilus influenzae for pneumonia patients without ongoing antibiotic treatment

TestS. pneumoniaeSensitivitya for H. influenzae
SensitivityaSpecificityb
Sputum culture86 (12/14)66 (42/64)89 (8/9)
Sputum mPCR92 (12/13)42 (24/57)78 (7/9)
Nasopharyngeal swab culture58 (19/33)82 (107/130)85 (17/20)
Nasopharyngeal swab mPCR61 (19/31)87 (89/102)80 (12/15)
Nasopharyngeal aspirate culture85 (23/27)74 (89/121)100 (20/20)
Nasopharyngeal aspirate mPCR93 (25/27)66 (79/119)85 (17/20)
  • a Reported as percent (number of positive samples/number of samples with the definite etiology).

  • b Reported as percent (number of negative samples/number of samples without the etiology).