JIM DOWDALLS / SCIENCE PHOTO LIBRARY JIM DOWDALLS / SCIENCE PHOTO LIBRARY
Vibrio cholerae. Illustration of the bacteria that causes cholera. V. cholerae is a virulent gram-negative bacteria with a curved rod and a single flagellum. Cholera is an acute, diarrheal illness caused by infection of the intestine with the bacterium. In these persons, rapid loss of body fluids leads to dehydration and shock. Without treatment, death can occur within hours.
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