i'm joined now by tobias kurt caesar a professor of public health in epidemiology at the medical center here in berlin so glad you could make some time for us granted there are some distance between us here in berlin and the united states of course but you worked at the harvard school of public health there you know the health system in the u.s. and you've been watching no doubt developments in your opinion why has the crisis in the u.s. deepen so quickly professor well the u.s. is certain that they could watch other regions of the world what happened there. as aggressively have discussed please leave the u.s. reactor that's somewhat late also and you looked at the pictures. that many people gathering if you could imagine what's happening and is this is this who are. really excellent but everett's for the u.s. . it's a problem if you have such kind of them coming at you. the damage is a whole nother thing you've been in contact with colleagues in the united states where where the numbers are again as we've already discussed are very very high which are outlook on what's likely to happen