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Campylobacter is a type of bacteria that can cause a diarrheal disease in people. [1] Its name means "curved bacteria", as the germ typically appears in a comma or "s" shape. According to its scientific classification, it is a genus of gram-negative bacteria that is motile .
The infectious dose is 1000–10,000 bacteria (although ten to five hundred bacteria can be enough to infect humans). Campylobacter species are sensitive to hydrochloric acid in the stomach, and acid reduction treatment can reduce the amount of inoculum needed to cause disease. [citation needed]
Campylobacter coli is a Gram-negative, microaerophilic, non-endospore-forming, S-shaped bacterial species within genus Campylobacter. [1] In humans, C. coli can cause campylobacteriosis , a diarrhoeal disease which is the most frequently reported foodborne illness in the European Union. [ 2 ]
Campylobacter jejuni is a species of pathogenic bacteria that is commonly associated with poultry, and is also often found in animal feces.This species of microbe is one of the most common causes of food poisoning in Europe and in the US, with the vast majority of cases occurring as isolated events rather than mass outbreaks.
Helicobacter pylori, previously known as Campylobacter pylori, is a gram-negative, flagellated, helical bacterium.Mutants can have a rod or curved rod shape that exhibits less virulence.
The Campylobacteria are a class of Gram-negative bacteria. It used to be known as Epsilonproteobacteria. [1] [a] Only a few genera have been characterized, including the curved to spirilloid Wolinella, Helicobacter, and Campylobacter.
Campylobacter upsaliensis is a gram-negative bacteria in the Campylobacter genus. [2] C. upsaliensis is found worldwide, and is a common cause of campylobacteriosis in humans, as well as gastroenteritis in dogs and cats. [ 3 ]
Comparative genomic analysis has led to the identification of 49 proteins which are uniquely found in virtually all species of the order Campylobacterales.