Since then, no Hospital Acquired Infections. And - they saved a ton of money by using them instead of N95's.
Not only do they save money, but the respirators are very comfortable. I wear a 3M version myself, and they are so much more comfortable than scratchy FFP3's.
They are also much more protective:
And the HCW's loved them;
I understand if this sounds too good to be true. Here's their website:
At the bottom of that page, is their Respiratory FAQ:
@naomirwolf - if you want to avoid inhaling shed vaccines, then you'd be wise to get an N95.
You might be tempted to ignore this thread, but I have 5 years of experience of helping people get into respirators that avoid the problems you have mentioned previously.