joining you know one of the members of the double edged sword mr geisha and team epidemiologist dr fabiani lend from the prestigious robert koch institute here in berlin and was assisting the team in china from right here dr linda pleasure to have you on the program am i correct in understanding that the team isn't sure if the corona about us originated in china. we still have no good evidence for the place over that's right. do you think the team would have had a better idea if it had sort of been in china much earlier. well you know it's it's always the better because the tracks are still fresh or whole ever it's not too late of the investigations and so not diseases have started much much later than this one so i think there's still a good chance to find out what happened so you are convinced that we that they will come a time in our future that we will know where the corona virus actually originated from this is a very complicated puzzle especially since this virus causes all mild symptoms or no symptoms so it's harder to follow back the tracks to the patient 0 or the index case howeve