Gram negative, comma shaped, rods. Includes C. coli, C. fetus subsp. fetus (Review), C. hyointestinalis, C. jejuni, C. lari, C. sputorum subsp. bubul, C. sputorum subsp. sputorum, C. upsaliensis.
A worldwide zoonosis found in the gi tract of wild or domesticated cattle, cats, dogs, goats, rodents sheep, swine, and all varieties of fowl.
Upscale cooking trends, like less than completely cooked chicken livers, are also a risk(Pubmed).
Castrating sheep with your teeth, as they do in Wyoming, can lead to disease (MMWR).
And more from the CDC (PubMed): "Increased risk for enteric infection among workers in agriculture, health care, food, and personal care occupations might be related to workplace exposures to pathogens. Campylobacteriosis or salmonellosis should be considered when workers have symptoms compatible with these diseases." What? I should think of those organisms in pateints with compatable symptoms? What a concept.
Those who take care of cattle.
And drinking cattle or swine fecally contaminated water or slurry by mistake (one hopes) during events like obstacle adventure races (PubMed).
Campylobacter fetus subsp. testudinum subsp. nov.: reptiles (PubMed).
Bacteremia can occur in elderly or immunocompromised with C. fetus or C. jejuni being the most common (PubMed). C. jejuni and C. coli bacteremia occurs mainly in moderately young individuals without severe underlying diseases, are susceptible to antimicrobial agents, and the outcome is good, whether or not appropriate or inappropriate antimicrobial treatment given in the hospital (PubMed). ?At least in Finland. Your mileage may vary.
The effect of antibiotic treatment is not impressive, it will shorten symptoms by 1.3 days, hardly enough time to finish a good novel (PubMed). A single dose of one gram of azithromycin is curative (PubMed), although the usual dose is 500 mg a day for 3 days.
There is an ongoing issue of erythromycin and ciprofloxacin resistant Campylobacter jejuni subspecies jejuni in MSW in Quebec, Canada (PubMed).
Campylobacter species most likely in the blood are C. fetus and C. jejuni and are likely susceptible to imipenem or another carbapenem. Many bloodstream isolates are resistant to fluoroquinolones and erythromycin. Combine with gentamicin in patients with severe bacteremia and endovascular infections.
Guillain Barre Syndrome can follow C. jejuni infections as can a reactive arthritis in patients with HLA-B27. C. jejuni is also associated with Immunoproliferative Small Intestinal Disease, a form of lymphoma (PubMed).