At least a dozen species of Campylobacter have been implicated in human disease (Campylobacteriosis), with C. jejuni and C. coli the most common. In humans, 85% to 95% of infections by the Campylobacter species involve C. jejuni, while C. coli is involved in a majority of the other cases. The bacterium is also found in cattle, swine and birds. Similar to the C. jejuni, C. coli has the ability to cause enteritis with symptoms such as abdominal pain, diarrhea, bloody stool and fever. These symptoms are caused, in part, by a secreted cytolethal distending toxin.