Estimated transition rates and median time periods between epidemiological states for AI in waterfowl.

Rates estimated from published laboratory challenge trials, see methods for details.
n, number of laboratory challenges; n/a, not applicable; †, non-convergence of the model.
(1)By subtracting the latent period (1/σ) from the period for susceptible birds to become infectious (1/δ), we estimated the time for susceptible to become exposed (1/τ) and the infection rate τ.