Table Parameter ranges for stochastic simulations of outbreak trajectories, 2019 novel coronavirus outbreak, China, 2019–2020 Parameter Description Range Number of values explored within the range R0 Basic reproduction number 0.8–5.0 22 (equidistant) k Dispersion parameter 0.0110 20 (equidistant on log10 scale) D Generation time interval (days) 9–11,13,16–19 8 (equidistant) n Initial number of index cases 1–50 6 (equidistant) T Date of zoonotic transmission 20 Nov–4 Dec 2019 Randomised for each index case