With the new variants, most authorities are recommending the
wearing of KN95 or N95 masks.
Even an unfitted N95 mask will afford superior protection compared
to a cotten masks. But no mask will provide 100% protection.
Filtration Do it your self Filtration Units. An excellent article on how to
build one with a box fan.
From the CDC: Derk RC, Coyle JP, Lindsley WG, et al. Efficacy of
Do-It-Yourself air filtration units in reducing exposure to
simulated respiratory aerosols. Building and Environment. 2023.
https://reader.elsevier.com/reader/sd/pii/S0360132322011507
This webpage is for guidance
only, always consult your healthcare provider and theCDC Website
for information before making decisions relating to the coronavirus.
