The scale-up estimator is a network-based estimator for the size of hidden or hard to count subpopulations. Several issues arise in the public health context when the aim is the estimation of injuries occurring in a certain population, where two common problems are present: (a) Small injuries...

Traditional inference for epidemic models depends on knowledge of the initial number of susceptible individuals. However, this may be difficult to obtain in practice. In this short note we show that it is possible to use data from a major epidemic to estimate the number of individuals initially...