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  • Title: Diagnosis of meningococcal meningitis in Brazil by use of PCR.
    Author: Pedro LG, Boente RF, Madureira DJ, Matos JA, Rebelo CM, Igreja RP, Barroso DE.
    Journal: Scand J Infect Dis; 2007; 39(1):28-32. PubMed ID: 17366009.
    Abstract:
    Fever and a petechial rash are strongly associated with meningococcal disease in the city of Rio de Janeiro. Early antibiotic therapy is indicated and, consequently, a reduction of confirmed cases by culture, Gram stain, and latex agglutination test is expected. We evaluated a multiplex PCR assay to identify Neisseria meningitidis, Streptococcus pneumoniae and Haemophilus influenzae in biological samples from cases of non-culture proven meningitis with a petechial rash at presentation. To detect DNA in cerebrospinal fluid (n = 71) or blood (n = 5), a PCR screen was performed, based on the crgA, ply and bexA targets, respectively. Of the total, 70 CSF and 3 blood samples (96%) were positive by PCR for the presence of N. meningitidis DNA. Another PCR assay predicted in 82% of these samples N. meningitidis serogroups A (2%), B (60%), C (7%), X (3%), Y (2%), 29E (2%) or W135 (24%). In non-culture proven meningitis, PCR was found to be a valuable adjunct for the demonstration of meningococcal aetiology.
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