Is there any other or unusual way to get campylobacter than food or pets?

Infectious sources: Campylobacter may be found in wild animals, birds, sheep and hogs as well as other vectors.

Campylobacteriosis : Campylobacter can be transmitted through sexual contact between people, contaminated drinking water, fecal-oral route, contact with infected pets, livestock, poultry & drinking raw milk or eating under-cooked poultry. It can be diagnosed through stool cultures & antigen testing is being developed.