Antimicrobial Activity of Filtered Far-UVC Light (222 nm) against Different Pathogens

Table 1

Antimicrobial activity of far-UVC light at 50 cm distance for different microorganisms.

Strain	Exposure time (min)	Dose (mJ/cm^2)	Control 1	Treated	Log R	Control 2	Treated	Log R	Control 3	Treated	Log R
Gram-positive
CD	5
	10
LM	10
	25
MRSA	5
	10
SA	5
	10
Gram-negative
AB	10
	15
EC	10
	15
PA	10
	15
Yeast
CA	15
	30
CN	15
	20

AB: Acinetobacter baumannii; CA: Candida albicans; CD: Clostridium difficile; CN: Cryptococcus neoformans; EC: Escherichia coli; LM: Listeria monocytogenes; MRSA: methicillin-resistant Staphylococcus aureus; PA: Pseudomonas aeruginosa; SA: S. aureus; CFU: colony-forming unis; Log R: log reduction.