Infection and transmission risks of COVID-19 in schools and their contribution to population infections in Germany: A retrospective observational study using nationwide and regional health and education agency notification data
Fig 1
Legend: An individual in age group i is classified either as susceptible (S), exposed (E), asymptomatically infected (IA), symptomatically infected (IS), hospitalised (H), in intensive care (U), suffering under long-COVID (L), fully recovered (RF), recovered from long-COVID (RL), and dead (D). P1−P8 are health state transition rates. The Greek letters quantify transition probabilities between the statuses.