Table 1.

Correlation among results obtained by amplification ofM. pneumoniae DNA, culture, direct antigen test, and serology (immunoblot)

Group (n)MaterialaNo. (%) of patients positive by:
NPCRHPCRPCRAGbCultureSerology
I (90)NPA633103
II (50)TA666546
III (50)NPA876548
Total (190)20 (11)16 (8)15 (8)11 (6)8 (4)17 (9)
  • a NPA, nasopharyngeal aspirates; TA, tracheal aspirates.

  • b AG, direct antigen test.