line between what he has and the trump approach which has been shall we say much more cavalier maya schwager with the latest on what's been an extraordinary political season in the united states to say the least thank you. earlier we spoke with you i rosenberg associate professor of epidemiology and biostatistics at the university of albanian asked him how hard it's going to be to trace the president's contacts over the past few days for better or worse the president is one of the most watched people in the world and i think you know in order to attend his events people have to go through security to register and so forth so i think being a lists and following up with people will be a possible task it's going to be some doable and i think we know there are there are lots of contacts racers and states and counties that can provide assistance to this so i think it's possible to oust but it will be obvious that i will go back some days and requires contacting reaching out to quite a large number of people but i think it's a doable tells. epidemiologist. from the very beginnings of the pandemic