NCIt definition : A genus of gram-negative helical, curved, or straight microaerophilic bacteria with
rounded ends and multiple sheathed flagella (unipolar or bipolar and lateral) with
terminal bulbs. Form nonpigmented, translucent colonies, 1-2 mm in diameter. Catalase
and oxidase positive. Found in gastric mucosa of primates, including human beings
and ferrets. Some species are associated with gastric and peptic ulcers and gastric
cancer. The type species is Helicobacter pylori.;
Alternative definition : CDISC: Any bacteria that is not assigned to the species level but can be assigned
to the Helicobacter genus level.;