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Deutch, Susanna; Pedersen, Lisbeth N; Pødenphant, Lone; Olesen, Rikke; Schmidt, Michael B; Møller, Jens K; Ostergaard, Lars
Scandinavian journal of infectious diseases, 2006, Volume: 38, Issue: 1Journal Article
Rapid aetiological diagnosis of bacterial meningitis is crucial for the early targeting of antimicrobial and adjuvant therapy. Broad-range polymerase chain reaction (PCR) targeting the 16S rRNA gene allows aetiological diagnosis of bacterial meningitis when applied to cerebrospinal fluid (CSF). We assessed the additional diagnostic effect of applying a novel broad-range real time PCR and subsequent DNA sequencing to culture, microscopy, and broad-range conventional PCR on CSF in patients with suspected bacterial meningitis. Broad-range conventional PCR and broad-range real time PCR with subsequent DNA sequencing were applied to 206 CSF specimens collected consecutively from 203 patients aged 6 d to 86 y. Patients' charts were reviewed for clinical information. 17 pathogens were identified by PCR and DNA sequencing or culture. Three specimens were negative by culture but positive by broad-range real time PCR. Three specimens were positive by culture but negative by broad-range real time PCR. Compared with culture, the sensitivity of broad-range real time PCR was 86%, and the specificitiy 98%. Conventional PCR resulted in a sensitivity of 64% and specificity of 98%. Broad-range real time PCR was generally comparable to culture of CSF and may be a useful supplement, particularly when antimicrobial therapy has been administered. Broad-range real time PCR was more sensitive than broad-range conventional PCR and microscopy.
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