Pulsed-field gel electrophoresis analysis of clonal relationships among Neisseria meningitidis A strains from different outbreaks

Eur J Clin Microbiol Infect Dis. 1997 Jul;16(7):541-4. doi: 10.1007/BF01708241.


Pulsed-field gel electrophoresis was used to analyze the DNA of 67 Neisseria meningitidis A strains from five African outbreaks occurring between 1988 and 1996. Endonuclease Bg/II was used to cut chromosomal DNA, generating 19 analyzable fragments. This technique allowed comparison of clonal relationships between outbreak strains and revealed that the same pulsotype was responsible for the outbreaks. This pulsotype is closely related to strain B54, subgroup III reference strain, Finland, 1975, showing only two fragment differences.

MeSH terms

  • Africa / epidemiology
  • Bacterial Typing Techniques
  • Clone Cells / classification
  • DNA, Bacterial / analysis*
  • Disease Outbreaks*
  • Electrophoresis, Gel, Pulsed-Field
  • Humans
  • Meningitis, Meningococcal / epidemiology*
  • Meningitis, Meningococcal / microbiology
  • Meningococcal Infections / epidemiology*
  • Meningococcal Infections / microbiology
  • Neisseria meningitidis / classification
  • Neisseria meningitidis / genetics*
  • Serotyping


  • DNA, Bacterial