Class | Cause | Example |
Waterborne | Pathogens that originate in fecal material and are transmitted by ingestion | Cholera, typhoid fever |
Water-washed | Organisms that originate in feces are transmitted through contact because of inadequate sanitation or hygiene | Trachoma |
Water-based | Organisms that originate in the water or spend part of their life cycle in aquatic animals and come in direct contact with humans in water or by inhalation | Schistosomiasis, Legionellosis |
Water-related | Microorganisms with life cycles associated with insects that live or breed in water | Yellow fever |