Figure 2.

Dynamics of viremia in ducklings and chicks in the days post-infection as a function of age when infected with Japanese encephalitis virus. The eight lines in each graph give the fitted model for the trend in viremia as a function of time post-infection by using the equation PFU = (α×AGE^β×f(t,μ,σ))^6.67, where f is the lognormal distribution with parameters α and σ. The individual points are the actual data observations of viremia count for all the infected animals on days 1, 2, 3, 4, 5 and 7 post-infection. PFU = plaque-forming units.