causing severe ill-ch so in some ways now with the boosters you're refortifying that very good protection around the lungs. that could be great. that can be important especially for people who are vulnerable. does it do as much for the upper air ways where the virus can still reside and potentially transmit? i don't think we know the answer to that. so if the question you're asking is will the boosters decrease the transmission i was describing among the unvaccinated? it may for a period of time but understand what the purpose of the vaccines are and understand that picture i just drew for you in terms of how the vaccines work. >> final question, i mean, schools obviously are under way. we have been talking to doctors and nurses and hospital administrateors saying cases among young people is spiking and most heart breaks is the hospitalizations of pediatric cases. what can you tell us what these numbers actually look like. every one is a painful tragedy to see, but is it still something that is isolated