Fig 4. Infectious virus and viral RNA dynamics in upper respiratory tract of donor and contact groups.

Dynamics of infectious virus V_u (red lines) and viral RNA R_u (blue lines) as given by model Eq 3 versus infectious viral titers (red circles) and viral RNA (blue diamonds) in the upper respiratory tract of (A.) donors, (B.) contacts with fixed initial virus, V₀ = 1. Model parameters are given in Table 2.