What is Campylobacter species?
Campylobacter species are microaerophilic, Gram-negative, spiral bacteria that colonise the intestinal tracts of birds and mammals. In humans they are not part of the commensal microbiota; their presence reflects acute or recent infection. Campylobacter jejuni and Campylobacter coli account for the majority of human campylobacteriosis, transmitted through undercooked poultry, unpasteurised milk, and contaminated water. After a short incubation the organism invades the mucosa of the ileum and colon, triggering an inflammatory diarrhoeal illness.