Fig. 1.

A diagram of the baseline model structure for SARS-CoV-2 in Brazil, representing the unmitigated epidemic spread scenario. The variables in the compartments represent individuals as follows. S: susceptible, E: presymptomatic infectious, A: asymptomatic infectious, I: infectious with mild symptoms, X: infectious with mild symptoms and self-isolated, H${}_C$: infectious, requiring hospital treatment but denied, H: infectious and hospitalised, ICU: infectious, receiving intensive care, ICU${}_C$: infectious, requiring intensive care but denied, ICU${}_H$: infectious, requiring intensive care but being admitted to a regular hospital bed, R: recovered, D: deceased. All compartments are further subdivided into 5 year age classes from 0 to 90+ years old.