Occurrence of Sheathed Flagella in Campylobacter cinaedi and Campylobacter fennelliae

Abstract
Campylobacter cinaedi and Campylobacter fennelliae possess sheathed flagella, a feature which, among organisms currently classified as campylobacters, had been associated previously only with Campylobacter pylori. No other Campylobacter or Wolinella species possesses sheathed flagella. This feature helps to characterize the phylogenetic group that includes C. pylori, C. fennelliae, and C. cinaedi; however, Wolinella succinogenes, the fourth member of this group, does not possess sheathed flagella.