010020030040050060070000.20.40.60.81susceptibleexposedinfectiousremoveddays since first casepopulation (millions)SEIR: the compartments partition the population, so they stackinfectious (thousands)020406080100120infectious (right axis)peak 115k on day 303susceptibleexposedinfectiousremovedmeasures in forceinfectious (right axis)