Curviform, Cell Wall-Deficient, and Obligate Intracellular Bacteria: Pathogenesis and Clinical Relevance

A patient presents with sudden onset of watery diarrhea described as 'rice water stool,' severe dehydration, and muscle cramps after consuming contaminated water. Which organism is most likely responsible for these symptoms, and what is the primary mechanism of its pathogenesis?

Which selective medium is most appropriate for isolating Vibrio species from stool specimens, and what is its mechanism of action?

A patient with a history of diabetes presents with rapidly spreading blisters and signs of septicemia after exposure to coastal waters. Which Vibrio species is most likely responsible, and what is the recommended treatment?