>> we keep hearing of miracle treatments like monoclonal antibodies and the like. that doesn't necessarily work with those long haulers? >> there is too much variability in the data right now for us to say monoclonal antibodies are going to work in every person. it depend on what the actual mechanism of long covid is. again, is that an inflammatory process where the immune system hasn't turned off or is it the inflammatory process where the immune system is starting to attack the cells of the body or the result of organ damage? we can't point to monoclonal antibodies as a concise, cohesive, comprehensive solution to a problem that just has too much variability. >> some of the patients as you know say it has been more than a year since their original covid diagnosis. could symptoms last the rest of their lives? >> it is possible. again, understanding the mechanism is going to be important what we do know is that a third of patients or more