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  • Title: Diagnostic utility of Borrelia burgdorferi cerebrospinal fluid polymerase chain reaction in children with Lyme meningitis.
    Author: Avery RA, Frank G, Eppes SC.
    Journal: Pediatr Infect Dis J; 2005 Aug; 24(8):705-8. PubMed ID: 16094225.
    Abstract:
    BACKGROUND: Cerebrospinal fluid (CSF) laboratory tests are frequently collected to help differentiate Lyme meningitis from other causes of aseptic meningitis. Previous studies using Lyme CSF polymerase chain reaction (PCR) have yielded varied results (sensitivity between 10 and 90%). No studies have specifically examined the diagnostic utility of Lyme CSF-PCR in North American children with Lyme meningitis. METHODS: Retrospective chart review of children presenting to a children's hospital in a Lyme-endemic region between October 1999 and September 2004. Patients were included if they had both Lyme serology and Lyme CSF-PCR performed during the same hospital encounter and had documented meningitis. Patients were considered to have Lyme meningitis if they had meningitis and met CDC criteria for Lyme disease. The Lyme CSF-PCR assay amplified a Borrelia burgdorferi DNA flagellin gene sequence. RESULTS: Of 108 patients with meningitis who qualified for the study, 20 patients met criteria for Lyme meningitis and 88 were classified as aseptic meningitis. Positive Lyme CSF-PCR was found in 1 patient (1 of 20, 5%) with Lyme meningitis and one patient classified as aseptic meningitis (1 of 88, 1%). Lyme CSF-PCR had a sensitivity of 5% and a specificity of 99%. The only Lyme meningitis patient with positive Lyme CSF-PCR had the highest CSF white blood cell count and CSF protein values compared with the other Lyme meningitis patients. CONCLUSIONS: This is the first study to evaluate Lyme CSF-PCR exclusively in North American children. This commercially available laboratory test is not generally helpful for identifying Lyme meningitis because of its low sensitivity.
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