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  • Title: Counterimmunoelectrophoresis in the diagnosis of bacterial meningitis.
    Author: Colding H, Lind I.
    Journal: J Clin Microbiol; 1977 Apr; 5(4):405-9. PubMed ID: 67124.
    Abstract:
    The aim of the present study was to investigate whether counterimmunoelectrophoresis (CIE) would facilitate the rapid, etiological diagnosis of bacterial meningitis when used in parallel with other routine methods in a medical bacteriological laboratory. Of 3,674 consecutive specimens of cerebrospinal fluid (CSF) received at the Department of Diagnostic Bacteriology, Statens Seruminstitu, 283 specimens (each representing one patient) were selected for examination by CIE on the basis of the following criteria: bacteria or pleocytosis or both by microscopy or positive culture or both. CIE was performed with antisera to Neisseria meningitidis (groups A, B and C), Streptococcus pneumoniae (omni-serum and pools A to 1), and Haemophilus influenzae type b. Antigen was detected in 57% (72/126) of specimens in which cultures revealed these three kinds of microorganisms in CSF and in 12% (17/139) of the culture-negative specimens. CSF specimens from 21 patients with bacterial meningitis caused by other species were all negative in CIE, except four, three of which contained Escherichia coli antigen reacting with antiserum to N. meningitidis group B and one E. coli antigen reacting with antiserum to H. influenzae type b. Specific diagnosis was achieved in 60% (170/283) of the specimens studied and could be extablished within 1 h in 85% (145/170) by the combined results of microscopy and CIE. Ten specimens, nine of which showed a reaction with antiserum to N. meningitidis group A, were positive by CIE only.
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