Meyers [23] noted that in the case of networks, estimating the average transmissibility T may be more valuable than R 0 . This means reporting not only the number of new infections per case, but also the total estimated number of contacts during the infectious period of that case. Given the primary role of contact tracing in infectious disease control, these data are often collected. Unlike R 0 , T can be justifiably extrapolated from one location to another even if the contact patterns are quite disparate.