Reduce the possibility of transmission during that initial period of infection, even in those who are vaccinated. but the rates of infection in those that are vaccinated, as was mentioned already, are very, very low. what's driving this surge is really the unvaccinated, and that is crucial that we focus in on. we do need to continue to watch the levels of protection in those that are vaccinated and take that very seriously, learn from colleagues in other parts of the world that are further along in their experience with the delta variant, and thinking about boosters, preparing for boosters, st...