WHY YOU SHOULD UPGRADE TO A N-95 MASK...NOW That's my blog posting of a few days ago. Finally, the  CDC effectively said so yesterday .  Well, not exactly, for they only said N95 and KN95 masks offer the best protection.  They stopped short of saying wear those masks, or else.  I just bought those  N95 masks from Amazon  for a little more than a dollar each.  However, I checked today, and they are out of stock. Here is a comparison: A P100 mask is much more expensive than the others: Me?  I use a combination of N95 and face shield.  You?  What about a  full-face reusable respirator,  which costs $45, with replaceable filters, 3 pairs for $24.50? You will now be able to order free COVID-19 test kits from Wednesday.  How?   Read this.   Only four kits/household, to be mailed to your home.  You'll need to wait one to three weeks to receive them.  Local sites will also be established where cases are the worst. An  underwater volcanic eruption near Tonga  triggered non-destructive