While the current pandemic is still not completely under control, KF94
masks (Korea standard) are recommended to be used as an alternative to N95 (United States standard) masks for primary protection from the viral infections. In case of the unavailability of either N95 or KF94 face masks. It is advised that ASTM Level 3 mask (surgical grade) is also a good alternative. Just in case you are looking for the availability of 3M N95 respirators, we still see some 3M N95 masks in Stock
on n95-facemasks.com by the time we write this article.