Campylobacter is primarily a source of intestinal bacterial infections. There are different types, including Campylobacter jejuni involved in gastroenteritis mainly with abdominal pain, diarrhea, and sometimes vomiting. A stool sample, and cultures if needed, enables the identification of the bacterium. Antibiotics are needed. There is also the Campylobacter pylori, renamed Helicobacter pylori, involved in prolonged inflammation of the stomach called chronic gastritis.