its army of white robes to italy for the 1st time to revolutionize medical treatment inspired by che guevara will britain be next to need help from the communist island for more on this global pandemic is professor david heyman who led the global response to the saaz epidemic while he was executive director of the world health organization david thanks so much for joining us so many different model so much information coming out 1st of all your response to this u.c.l. cambridge study saying the u.k. government strategy could mean up to 70000 dead does it make any sense. well modelers use the information they have available at the time and they make assumptions based on the that information and then they put this into a model which churns out a result and the result can be a maximum or a minimum impact depending on what's done within their government models are useful for public health preparedness they're not necessarily useful for the general public to assimilate and try to understand so what we're seeing is a government which is working based on estimates from many different sources doing