FIG. 1.

Transition rules of the SIR model with quarantine measures. (a) A node $j$ is randomly selected among the susceptible neighbors of infected node $i$. (b) With probability $T$, disease is transmitted from $i$ to $j$. Immediately after (b), (c) this newly infected node $j$ is detected with probability $f$, and (d) node $j$ and its susceptible and infected neighbors (including node $i$) are promptly isolated. (e) If node $j$ is not detected, node $i$ tries to infect the next susceptible neighbor.