Answer: vibrio

AnswerCrossword Clue
vibrioany of several comma- or S-shaped bacteria of the genus Vibrio, certain species of which are pathogenic for humans and other animals
vibrioa bacterium with a slight spiral curve, also VIBRION
vibrioany of a genus (Vibrio) of short rigid motile bacteria that are straight or curved rods and include pathogens especially of gastrointestinal diseases (as cholera)