Figure I.

* Food sharing and infection. A) All else being equal, sharing raw fish dishes among community members may contribute to increase the number of individuals infected (prevalence) but also dilute disease risk associated with inflammation as infection intensity per capita will be lower on average. B) Depending on social network group member occupations, likelihood for consumption of raw fish dishes varies. For example, rice farmers and fishermen are more likely to consume raw fish dishes and defecate in or near wetlands and rice fields due to their daily activities. Accordingly, the quantity of Ov eggs to be released in environments where Bithynia snails are found (wetlands, rice fields), thus transmission risk, will also vary among individuals having different occupations.