Fine-scale family structure shapes influenza transmission risk in households: Insights from primary schools in Matsumoto city, 2014/15
Fig 1
A schematic illustration of household chain-binomial model.
Nodes in different colours correspond to different types of individuals (e.g., father, sibling, etc.). Transmission patterns are illustrated taking household i as an example. Coloured dotted edges represent the risk of external infection ε to each individual. Solid grey edges denote person-to-person transmission risk (PTR) from one type of person to another. PTR from type l to k is given as ρkl, which refers to the risk of transmission given that the individual of type l is infectious. Households have different compositions and ρkl may also vary according to the composition. On the other hand, ε is the risk from outside the household and thus assumed to be identical across households.