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  • Title: Differentiation of B15 strains of Neisseria meningitidis by DNA restriction endonuclease fingerprinting.
    Author: Kristiansen BE, Bjorvatn B, Lund V, Lindqvist B, Holten E.
    Journal: J Infect Dis; 1984 Nov; 150(5):672-7. PubMed ID: 6092487.
    Abstract:
    The restriction endonuclease fingerprinting technique was applied to meningococcal DNA in an attempt to identify individual strains of Neisseria meningitidis B15 (serogroup B, serotype 15), which causes approximately 90% of cases of meningococcal disease in northern Norway. Thirty representative strains (10 each from asymptomatic pharyngeal carriers, patients with septicemia, and patients with meningitis) were investigated with the restriction endonucleases Hind III and Eco RI. The 10 carrier strains showed a remarkable heterogeneity of fingerprints that rendered each strain easily distinguishable from the others. The 10 strains from the blood and the 10 from the cerebrospinal fluid showed similar but not identical restriction patterns. The results obtained with the two endonucleases were in perfect agreement. Our data suggest that a large number of different B15 clones are present in the population of northern Norway, but that only one single clone causes invasive meningococcal disease.
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