Sexually Transmitted Enteric Infections By Sheldon R Morris, MD, MPH, University of California San Diego Reviewed / Revised Jan 2023 View Patient Education Various pathogens—bacterial (shigellosis, Campylobacter infection, or Salmonella infection), viral (hepatitis A, B, and C viruses), and parasitic (giardiasis or amebiasis) —are transmitted via sexual practices, especially those that can involve fecal-oral contamination.