Before revision:  We find an extremely heterogeneous distribution of computer susceptibility , with nearly all outbreaks starting at its tail and collapsing quickly once it is exhausted .
After revision:  Rather than comparing models, we directly estimate reach from a new and vastly more complete data from a parallel domain, that offers superior details and insight as concerns biological outbreaks. We find a highly heterogeneous distribution of computer susceptibility , with nearly all outbreaks starting at its tail and collapsing quickly once it is exhausted .