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PFGE fingerprints obtained with the SpeI endonuclease for all W-135 meningococci of genosubtype P1.5,2,36b found in Sweden since 1979 (strains 1 to 17) as well as two reference strains (Ref) from the 2000 hajj-associated outbreak (Table 1). Strains 13 to 16 are known to be hajj associated.
