Initially, the CDC, the World Health Organization and my office recommended against the general public wearing mask based on the best available science at the time, in terms of whether or not it prevented the wearer from catching Corona virus that we've learned about this disease, and we've always said We're gonna learn more, we're gonna adjust And we've learned that there's a fair amount of asymptomatic spread until we've asked the CDC to take another look at whether or not having more people wear masks will prevent transmission of the disease to other people.