Campylobacter upsaliensis is a gram negative bacteria in the Campylobacter genus. C. upsaliensis is found worldwide, and is a common cause of Campylobacteriosis in humans, as well as gastroenteritis in dogs. Human infections are primarily associated with raw or undercooked meat and contaminated water sources, however there is some zoonotic risk associated with the spread from dogs. C. upsaliensis primarily affects the gastrointestinal tract as it damages gastrointestinal epithelial cells. There are many methods for detecting C.upsaliensis including PCR and ELISA, however there is no current gold standard in detection techniques. Infection is typically self limiting, however there is antimicrobial therapy available.