Sequence-Based Typing of flaB Is a More Stable Screening Tool Than Typing of flaA for Monitoring of Campylobacter Populations

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Abstract
Different typing schemes for Campylobacter spp. were evaluated with 70 outbreak and sporadic isolates. The discriminatory indexes were 0.944 (by pulsed-field gel electrophoresis), 0.920 (by genotyping of the flagellin A gene), 0.902 (by genotyping of flaB ), and 0.886 (by multilocus sequence typing). Cross-classification gave 94.77 or 95.82% (PFGE- flaA or PFGE- flaB ) concordance. flaA was overdiscriminatory in three cases, most probably due to intragenomic recombination.