You will also note that in the early pandemic, it was completely unclear that non-N95 masks, such as surgical masks (let alone cotton masks) would have a positive benefit. That changed later on, of course.
That statement reflected the best information available at the time, but it was designed to be as simple and actionable as possible, not to communicate highly-technical nuance.
You will also note that in the early pandemic, it was completely unclear that non-N95 masks, such as surgical masks (let alone cotton masks) would have a positive benefit. That changed later on, of course.
That statement reflected the best information available at the time, but it was designed to be as simple and actionable as possible, not to communicate highly-technical nuance.