Rt depends on policy. I mention that before measures it was closer to 3. The question is how does it respond to different kinds of social distancing, test and trace and other policies. And of it does, is it feasible to contain it so that a significant part of the population is still susceptible by the time when we get the vaccine.
Ricardo Hausmann, a former minister of planning of Venezuela and former chief economist at the Inter-American Development Bank, is a professor at Harvard Kennedy School and Director of the Harvard Growth Lab.