<P> Vibrio cholerae is a Gram - negative , comma - shaped bacterium . The bacterium 's natural habitat is brackish or saltwater . Some strains of V. cholerae cause the disease cholera . V. cholerae is a facultative aerobe and has a flagellum at one cell pole as well as pili . V. cholerae can undergo respiratory and fermentative metabolism . When ingested , V. cholerae can cause diarrhoea and vomiting in a host within several hours to 2 -- 3 days of ingestion . V. cholerae was first isolated as the cause of cholera by Italian anatomist Filippo Pacini in 1854 , but his discovery was not widely known until Robert Koch , working independently 30 years later , publicized the knowledge and the means of fighting the disease . </P>
<P> Vibrio cholerae is a Gram - negative , comma - shaped bacterium . The bacterium 's natural habitat is brackish or saltwater . Some strains of V. cholerae cause the disease cholera . V. cholerae is a facultative aerobe and has a flagellum at one cell pole as well as pili . V. cholerae can undergo respiratory and fermentative metabolism . When ingested , V. cholerae can cause diarrhoea and vomiting in a host within several hours to 2 -- 3 days of ingestion . V. cholerae was first isolated as the cause of cholera by Italian anatomist Filippo Pacini in 1854 , but his discovery was not widely known until Robert Koch , working independently 30 years later , publicized the knowledge and the means of fighting the disease . </P>
briefly describe the shape of the bacterium that causes cholera
briefly describe the shape of the bacterium that causes cholera
comma - shaped
comma - shaped