gram-negative spiral, rod-shaped, or curved bacteria with a single polar flagellum, bipolar flagella, or no flagellum.

Campylobacter species are the major cause of human bacterial gastroenteritis, and C. jejuni and C. coli together account for over 95% of Campylobacter infections in humans.
Previous infection with certain strains of C. jejuni is linked with the development of the neurological disorder Guillain-Barre syndrome (GBS).

Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales; Campylobacteraceae; Campylobacter