These infection rate estimates can guide policy makers at both state , national or world level to achieve a better management of risk to society .
The decisions <*> are very different during early stages of an emerging epidemic
These infection rate estimates can guide policy makers at both state , national or world level to achieve a better management of risk to society .
The decisions facing policy makers are very different during early stages of an emerging epidemic where the infection rate is low , middle stages where the rate is rapidly climbing , and later stages where the epidemic curve has flattened to a low and relatively sustainable rate .