The "F-diagram" (feces, fingers, flies, fields, fluids, food), showing pathways of<unk><unk><unk>  disease transmission. The vertical blue lines show barriers: toilets, safe water, hygiene and handwashing. The<unk>  (also called the<unk> –fecal<unk>  or orofecal<unk>  describes a particular<unk>  of transmission of a disease wherein pathogens in<unk>  particles pass from one person to the mouth of another person. Main causes of<unk><unk><unk>  disease transmission include lack of adequate sanitation (leading to open defecation), and poor hygiene practices. If soil or water bodies are polluted with<unk>  material, humans can be infected with waterborne diseases or soil-transmitted diseases.<unk>  contamination of food is another form of<unk> -oral transmission. Washing hands properly after changing a baby's diaper or after performing anal hygiene can prevent foodborne illness from spreading. The common factors in the<unk>  can be summarized as five Fs: fingers, flies, fields, fluids, and food. Diseases caused by<unk> -oral transmission include typhoid, cholera, polio, hepatitis and many other infections, especially ones that cause diarrhea.
Fecal–oral route
Airborne transmission
Airborne 
Vertical transmission
Natural reservoir
Inoculation
Louse-feeder
Horizontal transmission