Regarding Campylobacter jejuni which is not true?

Campylobacter: Campylobacter are small, comma-shaped, Gram-negative rods. Campylobacter enteritis resembles other acute bacterial diarrhea The source of infection may be food (eg, milk, undercooked fowl) or contact with infected animals or humans and their excreta. C jejuni serotype O19 have been associated with Guillain-Barre's syndrome & Alpha chain disease. Campylobacter infections are zoonotic. Infected animals are the main reservoir of the infection. Infected animal food products are the source of infection.