guidance? >> i think it is probably been a long time coming. but i do understand where they were coming from early on. we didn't have enough n-95s for health care personnel who are in the thick of it, treating people who are being intubated or on oxygen and spreading the virus more. i think now we know definitively they're better. we've always known that. but we can't let that mean that masks of any kind aren't better than no mask. it is still better to wear a cloth mask than none at you will. it is better to wear a surgical than a cloth. but n-95 are the best. >> are you concerned with so much guidance coming out from the cdc and so many adjust. s, the message isn't going through to the folks that it as effects the most. >> the biggest part of public health is messaging and i think it is been a bit messy. but it is in the midst of a