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Dendrogram showing the genetic relationships among the 43 non-type b H. influenzae isolates obtained from meningitis cases in Salvador, Brazil, as determined by pulsed-field gel electrophoresis. The columns, from left to right, show the isolate identification number, serotype, period of isolation in relation to introduction of Hib conjugate vaccine, the PFGE pattern designation, and presence of the IS1016bexA partial deletion. Note: NC, non-capsulated.
