Figure 1From: The epidemiological impact of childhood influenza vaccination using live-attenuated influenza vaccine (LAIV) in Germany: predictions of a simulation study Model structure. Individuals are either born susceptible (S) or with maternal protection (M), which prevents infection and successful vaccination. Only susceptible individuals can successfully be vaccinated (VLAIV and VTIV) or infected. When infected, they pass through a latent period (E) before becoming infectious (I) and finally become immune (R). Individuals can completely lose their immunity (derived by infection or vaccination) and become susceptible again.Back to article page