they're joined by now by martin starmer he is a better all of just a lab for him to disciplinary medicine in frankfurt thank you so much for joining us and i'd like to ask in your expert opinion i mean we have here flights being canceled countries bringing back their citizens is this really necessary from a medical point of view. no that seems to be the best solution actually because. spreading before symptoms. by the patients or by the infected people so they don't have a specific control of all the cells to carry the virus or not so there's a lot of danger of transporting infected patients from country to country sitting in a plane being infected with the why was might spread the virus even more you mentioned the danger how dangerous is the virus. actually difficult to say or to compare with a water system the rate actually spending between 2 and 2 and how percent mainly if they do you know elderly people as basic diseases so. might be comparable total strolling through in some wave australian scientists they have now created a lab version of the virus in order to understand its nature