as they have a negative test at the end of that seven days. but they said if the hospital puts themselves in a contingency plan, if the hospital says, wow, we are short and we are really getting overrun with patients, actually that can be shortened to five days and you don't need a test at the end of it. if it's a crisis situation, again, it's the hospital that gets to decide that, if it's a crisis situation, there's no restrictions. the hospital can decide if they're going to be doing any isolation of health care workers who test positive for covid-19. poppy, it will be interesting to see, this is just health care workers, delta air lines also asking to have the rules changed because they want to keep their planes up in the air, something we were hearing from pete a minute ago. it will be interesting to see if the cdc changes the rules for other industries as well. >> elizabeth, thank you. happy holidays. let me bring in -- >> happy holidays. >> -- chief clinical officer --