Before revision:  However, this assumption rarely holds in practice, as diseases typically spread through connections between individuals . We introduce an infection model for networks, inspired by characteristics of COVID-19 and similar diseases,  which generalizes the traditional i.i.d. model from probabilistic group testing.
After revision:  However, this assumption rarely holds in practice, as diseases typically spread through interactions between individuals and therefore cause infections to be correlated. Inspired by characteristics of COVID-19 and similar diseases, which generalizes the traditional i.i.d. model from probabilistic group testing.