1. This document discusses diarrhea caused by bacterial infections and provides treatment recommendations. It outlines several bacteria that commonly cause diarrhea, including Shigella, Salmonella, E. coli, and Campylobacter jejuni. 2. Diagnosis involves multiplex PCR or culture-based methods to identify the bacterial pathogen. Treatment depends on the causative agent but often involves oral rehydration with salts and zinc supplementation. 3. For cholera, caused by Vibrio cholerae, treatment involves oral rehydration salts to prevent dehydration and antibiotics to eliminate the pathogen. Close monitoring is needed due to the risk of severe dehydration from cholera's toxin.